1. Endocrine and Oncology Division, Department of Surgery Tulane University School of Medicine New Orleans Louisiana USA
2. Tulane University School of Medicine New Orleans Louisiana USA
3. Department of Anesthesiology Tulane University School of Medicine New Orleans Louisiana USA
4. Genetics Unit, Histology and Cell Biology Department Suez Canal University Ismailia Egypt
5. Division of Thyroid and Parathyroid Endocrine Surgery, Department of Otolaryngology Massachusetts Eye and Ear Infirmary and Harvard Medical School Boston Massachusetts USA