1. Department of Breast Cancer, Cancer Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, P.R. China
2. School of Medicine, South China University of Technology, Guangzhou 510006, P.R. China
3. Department of Operation Room, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, P.R. China