Affiliation: | 1. Department of Thyroid, Breast and Vascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaan Xi, China;2. Department of occupational and environmental Health, School of Public Health, Central South University, Changsha, HuNan, China;3. Department of Oncology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaan Xi, China |