1. Department of Medical Oncology, Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing, China;
2. Department of Cancer Epidemiology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China;
3. Department of Oncology Surgery, First Affiliated Hospital, School of Medicine of Xi'an Jiaotong University, Xi'an, China;
4. Department of Breast Surgery, Liaoning Cancer Hospital, Shenyang, China;
5. Zhejiang Cancer Hospital, Hangzhou, China;
6. Sun Yat-Sen University Cancer Center, Guangdzhou, Guangdong, China;
7. Department of Breast-thyroid Surgery, Xiangya Sencod Hospital, Central South University, Changsha, China;
8. Department of Breast Surgery, the Second People's Hospital of Sichuan Province, Chengdu, China;
9. Department of Medical Oncology, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China;