1. Department of Internal Medicine, Division of Rheumatology, Gülhane Faculty of Medicine, University of Health Sciences Turkey , Ankara, Turkey
2. Department of Biochemistry, Selcuk University Faculty of Medicine , Selcuklu, Konya, Turkey
3. Division of Biostatistics, Selcuk University Faculty of Medicine , Selcuklu, Konya, Turkey
4. Division of Rheumatology, Selcuk University Faculty of Medicine , Selcuklu, Konya, Turkey