1. Department of Breast Surgery, the Second Hospital of Shandong University, Jinan, Shandong Province, People's Republic of China
2. Department of Breast Surgery, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
3. Department of Breast Surgery, Shanxi Cancer Hospital, Taiyuan, Shanxi Province, People's Republic of China
4. Department of Breast Surgery, the First Hospital of Jilin University, Changchun, Jilin Province, People's Republic of China
5. Breast Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, People's Republic of China
6. Department of Breast Surgery, Tianjin Medical University Cancer Institute and Hospital, Tianjin, People's Republic of China
7. Department of Thyroid and Breast Surgery, the First Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong Province, People's Republic of China
8. Department of Breast Surgery, Cancer Hospital, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
9. Department of General Surgery, Linyi People's Hospital, Linyi, Shandong Province, People's Republic of China
10. Breast Disease Center, Peking University People's Hospital, Beijing, People's Republic of China
11. Department of General Surgery, Beijing Chaoyang Hospital, Beijing, People's Republic of China
12. Breast Disease Center, Peking University First Hospital, Beijing, People's Republic of China
13. Breast Center, Qingdao University Affiliated Hospital, Qingdao, Shandong Province, People's Republic of China
14. Department of Breast and Thyroid Surgery, Weifang Traditional Chinese Hospital, Weifang, Shandong Province, People's Republic of China
15. Department of Breast Surgery, the Second Affiliated Hospital of Qingdao Medical College, Qingdao Central Hospital, Qingdao, Shandong Province, People's Republic of China
16. Department of General Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, People's Republic of China
17. Department of Breast Surgery, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, People's Republic of China
18. Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, Jiangsu Province, People's Republic of China
19. Department of Breast and Thyroid Surgery, Zibo Central Hospital, Zibo, Shandong Province, People's Republic of China
20. Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong Province, People's Republic of China
21. Breast Cancer Center, Shandong Cancer Hospital, Jinan, Shandong Province, People's Republic of China
22. Suzhou Institute of Shandong University, Suzhou, Jiangsu Province, People's Republic of China