1. Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, People's Republic of China
2. Department of Internal Medicine, Shangluo Central Hospital, Shangluo, Shaanxi, People's Republic of China
3. Department of Epidemiology, Human Genetics and Environmental Sciences, The University of Texas School of Public Health, Houston, TX, USA
4. Weapon Industry Health Research Institute, Xian, Shaanxi, People's Republic of China
5. Department of Translational Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, People's Republic of China
6. Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA