1. Department of Blood Transfusion; Xijing Hospital; Xi'an China
2. Department of Epidemiology; Faculty of Preventive Medicine; Fourth Military Medical University; Xi'an China
3. State Key Laboratory of Cancer Biology; Biotechnology Center; School of Pharmacy; Fourth Military Medical University; Xi'an China
4. Department of Blood Transfusion; Chengdu Military General Hospital; Chengdu China
5. Department of Blood Transfusion; 307 Hospital of PLA; Beijing China