A Trial of HR18034 for Postoperative Analgesia in Subjects Undergoing Hemorrhoidectomy.

Beijing Tongren Hospital Affiliated to Capital Medical University, Beijing

General Hospital of Northern Theater Command, Shenyang

Affiliated Zhongshan Hospital of Dalian University, Dalian

Taizhou People's Hospital, Taizhou

The Second Affiliated Hospital of Anhui Medical University, Hefei

Central Hospital Affiliated to Shandong First Medical University, Jinan

Jiaxing Second Hospital, Jiaxing

Li Huili Hospital of Ningbo Medical Center, Ningbo

The Third Xiangya Hospital of Central South University, Changsha

the first People's Hospital of Changde, Changde

Shiyan Taihe Hospital, Shiyan

Dongguan people's Hospital, Dongguan

Nanning Second People's Hospital, Nanning

The Affiliated Hospital of Guizhou Medical University, Guiyang

Sichuan Provincial People's Hospital, Chengdu

the First Affiliated Hospital of Xi'An Jiaotong University, Xi’an

The First Affiliated Hospital of Xi'an Medical University, Xi’an

Traditional Chinese Medicine Hospital of Hebei Province, Shijiazhuang