1. Occupational risk factors and breast cancer in Beijing, China: a hospital-based case–control study. Issue 2 (17th February 2022) Authors: Li, Aihua; Shen, Zhuang; Sun, Zhifeng; Yun, Shuiying; Tian, Xingkuan; Hu, Zaifang; Yu, Guixin; Hu, Li; Wang, Zihuan; Ye, Yan Journal: BMJ open Issue: Volume 12:Issue 2(2022) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗