A Study of YZJ-4729 Tartrate Injection for the Treatment of Pain After Orthopedic Surgery

The Third Xiangya Hospital of Central South University, Changsha

Chengdu Second People's Hospital, Chengdu

Sichuan Provincial People's Hospital, Chengdu

The Third People's Hospital of Chengdu, Chengdu

The First Hospital of Jilin University, Ch’ang-ch’un

Dalian University Affiliated Zhongshan Hospital, Dalian

Dongguan People's Hospital, Dongguan

The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou

The Second People's Hospital of Hefei, Hefei

Jinhua Central Hospital, Jinhua

Mianyang Central Hospital, Mianyang

The First Affiliated Hospital of Nanchang University, Nanchang

Zhongda Hospital Southeast University, Nanjing

Ningbo Medical Center Lihuili Hospital, Ningbo

The First Affiliated Hospital of Ningbo University, Ningbo

The Second Affiliated Hospital of Fujian Medical University, Quanzhou

Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai

Shanghai First People's Hospital, Shanghai

The Third Hospital of Hebei Medical University, Shijiazhuang

Suzhou University Affiliated Second Hospital, Suzhou

Henan Provincial People's Hospital, Zhengzhou