Clinic of Internal Medicine, İstanbul Medeniyet University Goztepe Training and Research Hospital, İstanbul, Turkey
2.Department of Rheumatology, Gülhane Military Medical Academy, Ankara, Turkey
3.Department of Rheumatology, Marmara University Faculty of Medicine, İstanbul, Turkey
4.Department of Rheumatology, İstanbul University Faculty of Medicine, İstanbul, Turkey
5.Department of Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
6.Department of Rheumatology, Koç University Faculty of Medicine, İstanbul, Turkey