1. Department of Breast and Thyroid Surgery, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213164, P.R. China
2. School of Medicine, Tongji University, Shanghai 200092, P.R. China
3. Department of Neurology, Kongjiang Hospital of Yangpu District, Shanghai 200093, P.R. China
4. Department of Breast and Thyroid Surgery, Shanghai No. 10 People's Hospital, Clinical College of Nanjing Medical University, Shanghai 200072, P.R. China