1. Department of Epidemiology and Biostatistics, West China School of Public Health, Sichuan University
2. Department of Epidemiology and Biostatistics, School of Public Health, Southwest Medical University
3. Department of Head and Neck and Mammary Gland Oncology, and Medical Oncology, Cancer Center, West China Hospital, Sichuan University
4. Department of Breast Surgery, the Second People’s Hospital of Sichuan Province
5. Shuangliu Maternal and Child Health Hospital