Browsing by Author "Sari, I"
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Item Examination of the psychometric properties of the sport interest inventory in a sample of Turkish football spectatorsYenilmez, MI; Ersöz, G; Çinarli, S; Sari, IPurpose/Rationle: It is important for sport marketers and academicians to understand spectators' motivation for attending football games. Although football is the most popular sport in Turkey, there is not enough study for understanding their behavior. The aim of this study is to examine the validity and reliability of the Sport Interest Inventory (SII) in a group of Turkish football spectators. Methodology: This research comprises two separate studies, where 259 football spectators participated in the first study, to whose data Explanatory Factor Analysis (EFA) was applied, and Confirmatory Factor Analysis (CFA) was applied to the data of 280 football spectators in the second study. Content validity was tested with EFA and CFA, and Pearson's correlation coefficients among the variables were used to indicate convergent and predictive validities, while reliability was tested by Cronbach's alpha internal consistency and composite reliability coefficients. Findings: The results support the appropriateness of the proposed 11-factor model for Turkish football spectators, indicating that the Turkish version of the SII can be used to measure the motivational orientations of Turkish sports fans toward participating in sports competitions. Research contribution: The research contributes to our knowledge in the area of sports marketing research by developing the measurement tool for determining football spectators' preference. Practical implications: Practitioners in sports marketing will be able to collect data through this measurement tool to examine football spectators' behaviors.Item Fabry disease in familial Mediterranean fever according to the severity of the diseaseUslu, S; Kabadayi, G; Kisa, PT; Inel, TY; Arslan, Z; Arslan, N; Akar, S; Onen, F; Sari, IObjectives: Mutations in the a-galactosidase A (GLA) gene result in Fabry disease (FD), a rare metabolic condition. FD patients present with heterogeneous clinical manifestations, which may overlap with systemic diseases including familial Mediterranean fever (FMF). The aim of this study was to determine the frequency of FD in patients with mild and severe FMF and to prevent misdiagnosis by increasing clinicians' awareness. Methods: Based on Tel-Hashomer criteria, the study included a total of 91 FMF patients. Patients were divided into two groups according to the number of recurrent clinical episodes or failure to respond to maximum therapy: those with mild and severe forms of the disease. GLA gene mutations and a-GLA enzyme activity were assessed. Records of MEFV mutations, therapies and demographic characteristics were kept. Results: FD testing was performed on a cohort of 91 FMF patients, 54.9% had mild FMF, 45.1% had severe FMF, and only one patient in the mild FMF subgroup tested positive for FD. The patient was a 39-year-old woman with a history of recurrent abdominal pain, distal limb pain and fever. She had low GLA enzyme activity and a heterozygous GLA gene mutation. Conclusions: Our findings suggest that FD should be considered in the differential diagnosis of FMF, especially in individuals with unusual symptoms. (c) 2024 Sociedad Espaoola de Reumatologoa (SER), Colegio Mexicano de Reumatologoa (CMR) y Elsevier Espaoa, S.L.U. All rights are reserved, including those for text and data mining, AI training, and similar technologies.Item The Efficacy and Safety of CT-P13 as First-line and Subsequent-line Therapy in Patients with Ankylosing Spondylitis: Real-life Data from TURKBIO CohortUslu, S; Gulle, S; Can, G; Senel, S; Capar, S; Dalkilic, HE; Akar, S; Koca, SS; Tufan, A; Yazici, A; Yilmaz, S; Inanc, N; Birlik, M; Solmaz, D; Cefle, A; Goker, B; Yolbas, S; Krough, NS; Yilmaz, N; Erten, S; Bes, C; Soysal, O; Ozturk, MA; Haznedaroglu, S; Yavuz, S; Direskeneli, H; Onen, F; Sari, IItem Efficacy and Safety of CT-P13 as First- and Second-Line Treatment in Patients with Ankylosing SpondylitisUslu, S; Gülle, S; Sen, G; Capar, S; Senel, S; Dalkilic, E; Akar, S; Koca, SS; Tufan, A; Yazici, A; Yilmaz, S; Inanc, N; Birlik, M; Solmaz, D; Cefle, A; Goker, B; Direskeneli, H; Yolbas, S; Krogh, NS; Yilmaz, N; Erten, S; Bes, C; Gündüz, OS; Oztürk, MA; Haznedaroglu, S; Yavuz, S; Onen, F; Sari, IBackground/Objectives: CT-P13 is a biosimilar version of infliximab, a monoclonal antibody. In individuals with ankylosing spondylitis (AS), CT-P13 has been shown to be effective and to have a well-tolerated safety profile. The aim of this study was to evaluate the long-term drug persistence, safety, and efficacy of infliximab biosimilar CT-P13 in patients with AS undergoing first-line (1st-line) and later (>= 2nd-line) treatment in clinical practice. Methods: We performed an observational cohort study that included AS patients based on the biological drug database in the TURKBIO Registry between 2014 and 2021. The patients were divided into two groups: those receiving CT-P13 as first-line treatment or as a switch (>= 2nd-line) from another TNF inhibitor (TNFi). Standard disease activity metrics were used to assess the effectiveness of CT-P13, and drug retention rates were investigated. Results: There were 179 AS patients using CT-P13 (47.4% male, mean age: 42.9 +/- 11.3 years). Of these patients, 123 (68.7%) were receiving CT-P13 as a first-line treatment. The mean length of treatment was 3.5 years. CT-P13 drug retention rates in the general patient population were 58.6% and 48.2% in the first-line and >= second-line treatment, respectively, after 3 years of follow-up. The most common reason for CT-P13 treatment discontinuation was lack of efficacy. The first-line CT-P13 group had statistically substantially higher ASAS20/40 response rates at three and six months. Nonetheless, both groups' response rates at one year were comparable. Conclusions: In this real-world data analysis, AS patients who were TNFi na & iuml;ve (1st-line) and subsequently treated (>= 2nd-line) with CT-P13 showed encouraging drug retention rates with acceptable long-term effectiveness and safety.Item Assessing safety and efficacy of TNFi treatment in late onset ankylosing spondylitis: a TURKBIO registry studyUslu, S; Gulle, S; Sen, G; Cefle, A; Yilmaz, S; Kocaer, SB; Inel, TY; Koca, SS; Yolbas, S; Ozturk, MA; Senel, S; Inanc, N; Dalkilic, HE; Gunduz, OS; Tufan, A; Akar, S; Birlik, AM; Sari, I; Akkoc, N; Onen, FClinical data on the use of tumour necrosis factor inhibitors (TNFi) in late-onset ankylosing spondylitis (LoAS) are limited. The present study aimed to evaluate efficacy, safety, and treatment adherence associated with the initial use of TNFi therapy in biologic naive patients diagnosed with LoAS. Patients whose age of onset was >= 45 years and < 45 years were classified as having LoAS and YoAS, respectively, based on the age of symptom onset. There were 2573 patients with YoAS and 281 LoAS. Baseline disease activity measures were similar between the groups. No significant differences were seen between the two groups in response to treatment and in remaining on the first TNFi at 6, 12 and 24 months. In the LoAS group, the analysis showed that TNFi discontinuation was linked to VAS pain score (HR 1.04; 95% CI 1.01-1.06). Patient groups had similar rates of adverse events (YoAS: 8.7% vs. LoAS: 11.7%). In both biologic naive LoAS and YoAS patients, the study showed that the initial TNFi therapy was equally effective and safe.Item Efficacy and Safety of Secukinumab in the Treatment of Axial Spondyloarthritis: Real-Life Data from TURKBIO CohortGulle, S; Karakas, A; Can, G; Senel, S; Capar, S; Dalkilic, HE; Akar, S; Koca, SS; Tufan, A; Yazici, A; Yilmaz, S; Inanc, N; Birlik, M; Solmaz, D; Cefle, A; Goker, B; Yolbas, S; Krough, NS; Yilmaz, N; Erten, S; Bes, C; Soysal, O; Ozturk, MA; Haznedaroglu, S; Yavuz, S; Direskeneli, H; Onen, F; Sari, IItem A real-life analysis of patients with rheumatologic diseases on biological treatments: Data from TURKBIO RegistryÖnen, F; Can, G; Çapar, S; Dalkiliç, E; Pehlivan, Y; Senel, S; Akar, S; Koca, SS; Tufan, A; Yazici, A; Yilmaz, S; Inanç, N; Sari, I; Birlik, M; Solmaz, D; Cefle, A; Öztürk, MA; Yolbas, S; Krogh, NS; Yilmaz, N; Erten, S; Bes, C; Gündüz, ÖS; Göker, B; Haznedaroglu, S; Yavuz, S; Çetin, GY; Yildiz, F; Direskeneli, H; Akkoç, NObjective: TURKBIO registry, established in 2011, is the first nationwide biological database in Turkey. This study aimed to provide an overview of TURKBIO data collected by June 2018. Methods: The registry included adult patients with rheumatoid arthritis (RA), ankylosing spondylitis (AS), nonradiographic axial spondyloarthritis (nr-AxSpA), and psoriatic arthritis (PsA). Demographic and clinical features, disease activity markers, and other follow-up parameters, current and previous treatments, and adverse events were registered electronically at each visit using open-source software. The registration of patient-reported outcome measures was carried out electronically by the patients using touch screens. Results: TURKBIO registry included a total of 41,145 treatment series with biologicals. There were 2,588 patients with axSpA (2,459 AS and 129 nr-axSpA), 2,036 with RA, and 428 with PsA. The total number of patients, including those with other diagnoses, was 5,718. In the follow-up period, the number of patients and also visits steadily increased by years. The yearly mean number of visits per patient was found to be 2.3. Significant improvements in disease activity and health assessment parameters were observed following the biological treatments. Biologics were often given in combination with a conventional synthetic disease-modifying antirheumatic drug in patients with RA. Infections were the most commonly seen adverse events, followed by allergic reactions. Tuberculosis was observed in 12 patients, malignancy in 18, and treatment-related mortality in 31. Conclusion: TURKBIO provided a valuable real-life experience with the use of biologics in rheumatic diseases in Turkey.Item UNINTENTIONAL MONOTHERAPY IN RHEUMATOID ARTHRITIS PATIENTS RECEIVING TOFACITINIB AND DRUG SURVIVAL RATE OF TOFACITINIBInanc, N; Abacar, K; Ozturk, MA; Tufan, A; Karadeniz, H; Sari, I; Can, G; Erez, Y; Pehlivan, Y; Dalkiliç, E; Ocak, T; Cefle, A; Yazici, A; Senel, A; Akar, S; Ediboglu, ED; Koca, SS; Sagir, RP; Yilmaz, S; Gulcemal, S; Gündüz, ÖS; Basibüyük, CS; Alkan, S; Cesur, TY; Onen, FItem THE EFFICACY AND SAFETY OF ANTI-TNF A TREATMENT IN ANKYLOSING SPONDYLITIS PATIENTS WITH LATE ONSET COMPARED TO THOSE WITH ADULT ONSET; THE DATA FROM TURKBIO REGISTRYUslu, S; Can, G; Cefle, A; Yilmaz, S; Kocaer, SB; Inel, TY; Gülle, S; Koca, SS; Yolbas, S; Öztürk, MA; Senel, S; Inanc, N; Dalkiliç, E; Soysal, O; Tufan, A; Akar, S; Birlik, M; Sari, I; Akkoc, N; Onen, FItem Biological treatment in elderly and young patients with ankylosing spondylitis: TURKBIO real-life data resultsUslu, S; Gülle, S; Urak,Ö; Sen, G; Dalkiliç, E; Senel, S; Akar, S; Inanç, N; Cefle, A; Avsar, AK; Yolbas, S; Yilmaz, S; Gündüz, OS; Sari, I; Birlik, M; Akkoç, N; Önen, FObjectives: This study aims to investigate the effect of age on disease activity and biological treatment in patients with ankylosing spondylitis (AS). Patients and methods: A total of 811 AS patients registered in the TURKBIO registry database between 2011 and 2019 were categorized according to their age at the time of entry into the registry and assigned to one of two groups: young patients, defined as <60 years of age (n=610), and those aged >= 60 years (n=201) were recorded as elderly patients. Demographic, clinical, and laboratory characteristics, along with disease activity markers and other follow-up parameters, as well as current and prior treatments, were electronically recorded during each visit using open -source software. Results: The mean age of the elderly patients was 67 +/- 5.8 years, while the mean age of the younger patients was 49.2 +/- 10.9 years. Male predominance was lower in the older AS group compared to the younger AS group (p=0.002). During follow-up period, 397 patients (comprising 318 young and 79 elderly individuals) had a history of using at least one biological disease -modifying agent (bDMARD). There was no significant difference between the groups in terms of DMARD and bDMARD-use distributions. First tumor necrosis factor inhibitor (TNFi) retention rates were found to be similar in both groups over 10 years of follow-up. Adverse events were found to be similar in young (19.9%) and elderly (26.8%) AS patients. Conclusion: Research in the TURKBIO cohort reveals that both older and younger patients with AS exhibited similar disease activity levels with comparable treatment approaches. Moreover, the results of TNFi treatments in elderly patients were the same as those observed in younger patients, with no notable increase in safety concerns.Item The Efficacy and Safety of Anti-TNFα Treatment in Ankylosing Spondylitis Patients with Late Onset Compared to Those with Adult Onset; The Data from TURKBIO RegistryUslu, S; Can, G; Cefle, A; Yilmaz, S; Kocaer, SB; Inel, TY; Gülle, S; Koca, SS; Yolbas, S; Öztürk, MA; Senel, S; Inanc, N; Dalkiliç, E; Gunduz, O; Tufan, A; Akar, S; Birlik, M; Sari, I; Akkoç, N; Onen, FItem INCIDENCE OF ANTERIOR UVEITIS IN AXIAL SPONDYLOARTHRITIS DURING SECUKINUMAB TREATMENT: TWO YEARS REAL LIFE EXPERIENCE FROM TURKBIO REGISTRYAkleylek, C; Akar, S; Cinakli, H; Sagir, RP; Coskun, BN; Karakas, A; Apaydin, H; Kardas, RC; Isik, OO; Hakbilen, S; Okyar, B; Sosyal, O; Koca, SS; Pehlivan, Y; Dalkiliç, E; Can, G; Sari, I; Birlik, M; Onen, F; Erten, S; Ozturk, MA; Yazici, A; Cefle, A; Yilmaz, S; Cetin, GY; Akkoc, N; Yilmaz, NItem Primary central nervous system lymphoma in daily practice and the role of autologous stem cell transplantation in relapsed disease: A retrospective multicenter studyErkurt, MA; Berber, I; Tekgunduz, E; Dogu, MH; Korkmaz, S; Demir, C; Yilmaz, M; Akay, OM; Pala, C; Bilen, Y; Kaya, E; Sari, I; Sencan, M; Kuku, I; Altuntas, F; Dal, MS; Aydogdu, IWe investigated the course of 54 patients presenting with primary central nervous system lymphoma, who were treated in daily practice. The patients were treated with chemotherapy and/or radiotherapy and/or intrathecal chemotherapy. At a median follow-up period of 23 months (range 1-71), median relapse-free survival (RFS) and overall survival (OS) were not reached. Estimated 2-year RFS and OS rates were 42% and 48%, respectively. Ten relapsed PCNSL patients underwent ASCT. Complete remission rate of these patients was 40%, with 20% treatment-related mortality. Estimated 2-year RFS and OS rates were 37% and 40%, respectively. The prognosis of patients with PCNSL, who received off-study treatment, is still dismal. (c) 2016 Elsevier Ltd. All rights reserved.Item LONG-TERM SURVIVAL OF THE FIRST BIOLOGIC TREATMENT IN PSORIATIC ARTHRITIS AND THE EFFECT OF THE SELECTED TREATMENT ON DRUG SURVIVAL; TURKBIO REGISTRYKocaer, SB; Inel, TY; Erez, Y; Avsar, AK; Uslu, S; Karakas, A; Gulle, S; Can, G; Sari, I; Birlik, M; Dalkiliç, E; Pehlivan, Y; Akar, S; Cefle, A; Öztürk, MA; Yolbas, S; Yilmaz, N; Erten, S; Akkoc, N; Onen, FItem Genome-wide association study in Turkish and Iranian populations identify rare familial Mediterranean fever gene (MEFV) polymorphisms associated with ankylosing spondylitisLi, ZX; Akar, S; Yarkan, H; Lee, SK; Çetin, P; Can, G; Kenar, G; Çapa, F; Pamuk, ON; Pehlivan, Y; Cremin, K; De Guzman, E; Harris, J; Wheeler, L; Jamshidi, A; Vojdanian, M; Farhadi, E; Ahmadzadeh, N; Yüce, Z; Dalkiliç, E; Solmaz, D; Akin, B; Dönmez, S; Sari, I; Leo, PJ; Kenna, TJ; Önen, F; Mahmoudi, M; Brown, MA; Akkoc, NAnkylosing spondylitis (AS) is a highly heritable immune-mediated arthritis common in Turkish and Iranian populations. Familial Mediterranean Fever (FMF) is an autosomal recessive autoinflammatory disease most common in people of Mediterranean origin. MEFV, an FMF-associated gene, is also a candidate gene for AS. We aimed to identify AS susceptibility loci and also examine the association between MEFV and AS in Turkish and Iranian cohorts. We performed genome-wide association studies in 1001 Turkish AS patients and 1011 Turkish controls, and 479 Iranian AS patients and 830 Iranian controls. Serum IL-1, IL-17 and IL-23 cytokine levels were quantified in Turkish samples. An association of major effect was observed with a novel rare coding variant in MEFV in the Turkish cohort (rs61752717, M694V, OR = 5.3, P = 7.63x10(-12)), Iranian cohort (OR = 2.9, P = 0.042), and combined dataset (OR = 5.1, P = 1.65x10(-13)). 99.6% of Turkish AS cases, and 96% of those carrying MEFV rs61752717 variants, did not have FMF. In Turkish subjects, the association of rs61752717 was particularly strong in HLA-B27-negative cases (OR = 7.8, P = 8.93x10(-15)), but also positive in HLA-B27-positive cases (OR = 4.3, P = 7.69x10(-8)). Serum IL-1, IL-17 and IL-23 levels were higher in AS cases than controls. Among AS cases, serum IL-1 and IL-23 levels were increased in MEFV 694V carriers compared with non-carriers. Our data suggest that FMF and AS have overlapping aetiopathogenic mechanisms. Functionally important MEFV mutations, such as M694V, lead to dysregulated inflammasome function and excessive IL-1 function. As IL-1 inhibition is effective in FMF, AS cases carrying FMF-associated MEFV variants may benefit from such therapy. Author summary Ankylosing spondylitis (AS) is a highly heritable immune-mediated arthritis. To identify new genetic associations with AS, we performed genome-wide association studies in Turkish and Iranian AS patients and controls. We identified a novel rare coding MEFV variant associated with AS. Rare polymorphisms of MEFV, which encodes the protein pyrin, are known to cause Familial Mediterranean Fever (FMF), a monogenic, autosomal recessive, autoinflammatory disease which can be complicated by arthritis. 99.6% of Turkish AS cases, and 96% of those carrying the MEFV variant, did not have FMF, and the association with AS remains excluding cases with FMF. In Turkish subjects, the MEFV variant association was particularly strong in HLA-B27-negative cases, but also positive in HLA-B27-positive cases. This represents the first rare variant association with AS, and has the highest odds ratio for AS of any non-MHC reported hitherto, indicating a major effect on disease pathogenesis. We assessed serum cytokine levels in the cohort, and found that IL-1, IL-17 and IL-23 levels were higher in AS cases. Furthermore, among AS cases, IL-1 and IL-23 levels were increased in MEFV variant carriers compared with non-carriers. This study has therapeutic implications; as IL-1 inhibition is effective in FMF, AS cases carrying FMF-associated MEFV variants may benefit from such therapy.Item Does obesity affect treatment response to secukinumab and survival in ankylosing spondylitis? Real-life data from the TURKBIO RegistryKarakas, A; Gulle, S; Can, G; Dalkilic, E; Akar, S; Koca, SS; Pehlivan, Y; Senel, S; Tufan, A; Ozturk, MA; Yilmaz, S; Yazici, A; Cefle, A; Inel, TY; Erez, Y; Sari, I; Birlik, M; Direskeneli, H; Akkoc, N; Onen, FObjectives The aim of this study was to evaluate the impact of obesity on the treatment response to secukinumab and drug survival rate in patients with ankylosing spondylitis (AS). Methods We performed an observational cohort study that included AS patients based on the biological drug database in Turkey (TURKBIO) Registry between 2018 and 2021. The patients were divided into three groups: normal [body mass index (BMI) < 25 kg/m(2)], overweight (BMI: 25-30 kg/m(2)), and obese (BMI & GE; 30 kg/m(2)). Disease activity was evaluated at baseline, 3, 6, and 12 months. Drug retention rates at 12 months were also investigated. Results There were 166 AS patients using secukinumab (56.6% male, mean age: 44.9 & PLUSMN; 11.6 years). The median follow-up time was 17.2 (3-33.2) months. Forty-eight (28.9%) patients were obese. The mean age was higher in the obese group than in others (P = .003). There was no statistically significant difference in Bath Ankylosing Spondylitis Disease Activity Index 50, Assessment of SpondyloArthritis international Society 20 (ASAS20), ASAS40, Ankylosing Spondylitis Disease Activity Score (ASDAS) low disease activity, and ASDAS clinically important improvement responses between the three groups at 3, 6, and 12 months, although they were numerically lower in obese patients. Drug retention rates at 12 months were similar in all groups (P > .05). Conclusions This study suggested that obesity did not affect secukinumab treatment response and drug retention in AS patients.Item Unintentional Monotherapy in Rheumatoid Arthritis Patients Receiving Tofacitinib and Drug Survival Rate of TofacitinibInanc, N; Abacar, KY; Ozturk, MA; Tufan, A; Karadeniz, H; Sari, I; Can, G; Erez, Y; Pehlivan, Y; Dalkilic, HE; Ocak, T; Cefle, A; Yazici, A; Senel, AS; Akar, S; Durak-Ediboglu, E; Koca, SS; Piskin-Sagir, R; Yilmaz, S; Gulcemal, S; Soysal-Gunduz, O; Basibuyuk, CS; Alkan, S; Cesur, TY; Onen, FObjectiveTo determine the rate of unintentional monotherapy (UM; switching to monotherapy from combination therapy of patients' own volition) in rheumatoid arthritis patients receiving tofacitinib and to evaluate tofacitinib survival rate.MethodsThis national, multicenter study included patients' data from the TURKBIO Registry. Demographics, clinical characteristics, disease duration and activity, comorbidities, and treatments were analyzed.ResultsData of 231 rheumatoid arthritis patients (84.8% female, median age, 56 years) were included; 153 were initially prescribed combination therapy and continued to their therapies; 31 were initially prescribed combination therapy but switched to monotherapy on their own volition (UM); 21 were initially prescribed monotherapy and switched to combination therapy; 26 were initially prescribed monotherapy and continued to their therapies. The rate of comorbidities at the time of data retrieval was higher in the UM group than in the combination group (83.3% vs. 60.3%, p = 0.031). Presence of comorbidities was a significant factor affecting switching to monotherapy (p = 0.039; odds ratio, 3.29; 95% confidence interval, 1.06-10.18). The combination and UM groups did not differ regarding remission rate assessed by Disease Activity Score 28-joint count C-reactive protein (60.5% and 70%, respectively; p = 0.328). Drug survival rates of the UM and combination groups did not differ. The median drug survival duration of tofacitinib was 27+ months with 1- and 4-year drug survival rates of 89.6% and 60.2%, respectively, in the UM group.ConclusionsAlthough 13.4% of the study population started monotherapy unintentionally, drug survival and remission rates of the UM and combination groups were not different. Comorbidity was a factor affecting transition from combination therapy to monotherapy.Item DO COMORBIDITIES IMPACT PERSISTENCE OF FIRST TUMOR NECROSIS FACTOR INHIBITOR TREATMENT IN RHEUMATOID ARTHRITIS? DATA FROM TURKBIOInel, TY; Kocaer, SB; Erez, Y; Gulle, S; Karakas, A; Avsar, AK; Uslu, S; Can, G; Sari, I; Birlik, M; Dalkiliç, E; Pehlivan, Y; Akar, S; Goker, B; Cetin, GY; Haznedaroglu, S; Yavuz, S; Pirildar, T; Direskeneli, H; Akkoc, N; Onen, FItem DO COMORBIDITIES DECREASE THE FIRST TNF-INHIBITOR RETENTION AND TREATMENT RESPONSE IN AXIAL SPONDYLOARTHRITIS PATIENTS? DATA FROM TURKBIOErez, Y; Karakas, A; Kocaer, SB; Inel, TY; Gulle, S; Avsar, AK; Uslu, S; Can, G; Sari, I; Birlik, M; Dalkiliç, E; Pehlivan, Y; Senel, S; Akar, S; Koca, SS; Tufan, A; Yazici, A; Yilmaz, S; Inanc, N; Solmaz, D; Akkoc, N; Onen, FItem THE COST OF CARE OF RHEUMATOID ARTHRITIS AND ANKYLOSING SPONDYLITIS PATIENTS IN TERTIARY CARE RHEUMATOLOGY UNITS IN TURKEYMalhan, S; Pay, S; Ataman, S; Dalkilic, E; Dinc, A; Erken, E; Ertenli, I; Ertugrul, E; Gogus, F; Hamuryudan, V; Inanc, M; Karaaslan, Y; Karadag, O; Karakoc, Y; Keskin, G; Kisacik, B; Kiraz, S; Oksel, F; Oksuz, E; Parildar, T; Sari, I; Soy, M; Senturk, T; Taylan, A