1. China-Japan Friendship Hospital, Beijing, China
2. Qingdao Municipal Hospital, Shandong, China
3. Beijing Chao-Yang Hospital, Beijing, China
4. Henan Provincial People's Hospital, Henan, China
5. YanTai Yu Huang-Ding Hospital, Shandong, China
6. Weifang No. 2 People's Hospital, Shandong, China
7. Linzi District People’s Hospital, Shandong, China
8. Liangxiang Hospital, Beijing, China
9. Chuiyangliu Hospital Affiliated to Tshinghua University, Beijing, China
10. Tianjin Medical University General Hospital, Tianjin, China
11. First Affiliated Hospital of Soochow University, Jiangsu, China