1. Family Practice Unit, Uludağ University Family Health Center, Bursa, Turkey
2. Department of Internal Medicine, Division of Endocrinology and Metabolism, Uludağ University Faculty of Medicine, Bursa, Turkey
3. Department of Biostatistics, Uludağ University Faculty of Medicine, Bursa, Turkey
4. Department of Biostatistics, İzmir Katip Çelebi University Faculty of Medicine, İzmir, Turkey