1. Department of Thyroid and Parathyroid Surgery, Fujian Medical University Union Hospital, Fuzhou, China.
2. Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts.
3. Fujian Medical University, Fuzhou, China.
4. Department of Surgery, The University of HongKong-Shenzhen Hospital, Shenzhen, China.