1. The Third Affiliated Hospital of Guangzhou Medical University
2. Peking University Third Hospital
3. Sichuan jinxin xinan women & children's hospital
4. The Affiliated Hospital of Guizhou Medical University
5. Xiamen Maternal and Child Health Care Hospital
6. Affiliated Dongguan Shilong People's Hospital of Southern Medical University
7. First Affiliated Hospital of Shaoyang University
8. Guangdong Second Provincial General Hospital
9. Cangzhou People's Hospital
10. Affiliated Hospital of Yanan university, Yan an, CN
11. Huizhou Cenrtral People’s Hospital
12. The Affiliated Yue Bei People's Hospital of Shantou University Medical College
13. Xiaogan Hospital Affiliated to Wuhan University of Science and Technology
14. The Affiliated Hospital of Inner Mongolia Medical University
15. The Second Affiliated Hospital of Shantou University Medical College, China
16. The Third Staff Hospital of Baogang Group Baotou
17. Jinan University First Affiliated Hospital
18. Lanzhou University Second Hospital
19. Zhongshan City People's Hospital
20. Binhaiwan Central Hospital of Dongguan
21. The First Affiliated Hospital of Shantou University Medical College