1. Department of Internal Medicine; Division of Endocrinology and Metabolism; Hacettepe University School of Medicine; Hacettepe Ankara 06100 Turkey
2. Department of Dermatology; Hacettepe University School of Medicine; Hacettepe Ankara Turkey
3. Department of Endocrinology and Metabolism; Etlik Ihtisas Research and Training Hospital; Ankara 06800 Turkey