1. Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, Shandong, 250033, China
2. Department of Breast Surgery, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, 450008, China
3. Department of Breast Surgery, Shanxi Cancer Hospital, Taiyuan, Shanxi, 030013, China
4. Department of Breast Surgery, The First Hospital of Jilin University, Changchun, Jilin, 130021,China
5. Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050011, China
6. Department of Breast Surgery, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
7. Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong, 256603,China
8. Department of Breast Surgery, Cancer Hospital, Chinese Academy of Medical Sciences, Beijing, 100021, China
9. Department of General Surgery, Linyi People’s Hospital, Linyi, Shandong, 276003, China
10. Breast Disease Center, Peking University People's Hospital, Beijing, 100044, China
11. Department of General Surgery, Beijing Chaoyang Hospital, Beijing, 100043, China
12. Breast Disease Center, Peking University First Hospital, Beijing, 100034, China
13. Breast Center, Qingdao University Affiliated Hospital, Qingdao, Shandong, 266003, China
14. Department of Breast and Thyroid Surgery, Weifang Traditional Chinese Hospital, Weifang, Shandong, 261041, China
15. Department of Breast Surgery, The Second Affiliated Hospital of Qingdao Medical College, Qingdao Central Hospital, Qingdao, Shandong, 266042, China
16. Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, China
17. Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
18. Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu Province, Nanjing, Jiangsu, 210009, China
19. Department of Breast and Thyroid Surgery, Zibo Central Hospital, Zibo, Shandong, 255036, China
20. Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, 264000, China
21. Breast Cancer Center, Shandong Cancer Hospital, Jinan, Shandong, 250117, China