1. Department of Thyroid and Breast Surgery, Fourth Center Clinical College of Tianjin Medical University, Tianjin 300140, P.R. China
2. Department of Integrated Traditional Chinese and Western Medicine, The Fifth People's Hospital of Qinghai Province, Xining, Qinghai 810007, P.R. China
3. Department of Oncology, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China