1. The thyroid;Welbourn,1990
2. Surgeon’s approach to the thyroid gland: surgical anatomy and the importance of technique;Bliss;World J Surg,2000
3. The continuing development of the technique of thyroidectomy;Thompson;Surgery,1973
4. Embryological considerations of thyroid surgery: developmental anatomy of the thyroid, parathyroids and the recurrent laryngeal nerve;Gray;Am Surg,1976
5. Human embryology;Larsen,1993