1. Department of Pathology, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
2. Department of Obstetrics, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, China
3. Department of Breast and Thyroid Surgery, Liuzhou People’s Hospital Affiliated to Guangxi Medical University, Liuzhou, Guangxi, China