1. The Institute of Blood Transfusion; Chinese Academy of Medical Sciences; Chengdu China
2. Department of Obstetrics and Gynecology, Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital; Chengdu China
3. Department of Clinical laboratory; Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital; Chengdu China
4. Department of Transfusion, People's Hospital of Garzê; Sichuan China
5. Department of Transfusion, People's Hospital of Aba; Sichuan China
6. Blood Center of Aba; Sichuan China
7. Blood Center of Garzê; Sichuan China