1. Division of Endocrine Surgery, Department of General Surgery Ege University Hospital Izmir Turkey
2. Division of Thyroid and Parathyroid Endocrine Surgery, Department of Otolaryngology‐Head and Neck Surgery, Massachusetts Eye and Ear Infirmary Harvard Medical School Boston Massachusetts U.S.A.
3. Division for Endocrine and Minimally Invasive Surgery, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University Hospital G. Martino University of Messina Messina Italy