General Hospital of Shenyang Military Region, Shenyang, Liaoning, China
The 202nd Hospital of PLA, Shenyang, Liaoning, China
The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
Beijing Chao Yang Hospial, Bejing, Beijing, China
Beijing Daxing People's Hospital, Beijing, Beijing, China
Beijing Fuwai Hospital, Beijing, Beijing, China