1. Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
2. Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
3. Pathology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
4. The Fifth Medical Centre of Chinese PLA General Hospital, Beijing, People's Republic of China
5. Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, People's Republic of China