1. Department of Epidemiology; School of Public Health; The Fourth Military Medical University; Xi'an China
2. Department of Pharmacology; School of Pharmacy; The Fourth Military Medical University; Xi'an China
3. Department of Pharmacy; 451 Hospital of PLA; Xi'an China
4. Department of Hepatobiliary & Pancreas Surgery; Xijing Hospital; The Fourth Military Medical University; Xi'an China
5. Department of the First Treatment & Rehabilitation; The Fourth Military Medical University; Xi'an China
6. Department of Gynaecology and Obstetrics; Xijing Hospital; The Fourth Military Medical University; Xi'an China
7. Department of Transfusion; Xijing Hospital; The Fourth Military Medical University; Xi'an China
8. School of Public Health; The Fourth Military Medical University; Xi'an China