1. Department of Endocrinology and Metabolism, Keçiören Training and Research Hospital, University of Health Sciences, Ankara, Turkey.
2. Department of General Surgery, Keçiören Training and Research Hospital, University of Health Sciences, Ankara, Turkey.
3. Department of Otorhinolaryngology, Yüksek İhtisas University, Ankara, Turkey.
4. Department of Endocrinology and Metabolism, Ankara City Hospital, Ankara, Turkey.