[1] Affiliated Hospital of Guangdong Medical University
[2] ChinaAnesthesia Surgery Center
[3] ChinaDepartment of Anesthesiology
[4] ChinaDepartment of Surgical Anesthesia
[5] ChinaOperating Room
[6] ChinaOperating room
[7] ChinaSurgical Center
[8] DongGuan 510150
[9] First People’s Hospital of Foshan
[10] Foshan 528000
[11] Guangdong 999 Brain Hospital
[12] Guangdong Maternal and Child Health Hospital
[13] Guangdong Province
[14] Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences)
[15] Guangdong Second Province General Hospital
[16] Guangzhou 51000
[17] Guangzhou 510010
[18] Guangzhou 510060
[19] Guangzhou 510080
[20] Guangzhou 510120
[21] Guangzhou 510150
[22] Guangzhou 510282
[23] Guangzhou 510317
[24] Guangzhou 510510
[25] Guangzhou 510515
[26] Guangzhou 510623
[27] Guangzhou Maternal and Child Health Center
[28] Meizhou 514000
[29] Meizhou People’s Hospital
[30] Nanfang Hospital
[31] Operating Room
[32] People’s Hospital of Dong Guan
[33] Shanwei 516400
[34] Shanwei Pengpai Memorial Hospital
[35] Shenzhen 518020
[36] Shenzhen People’s Hospital
[37] Southern Medical University
[38] Southern Theater General Hospital of the Chinese People’s Liberation Army
[39] Sun Yat-sen Memorial Hospital
[40] Sun Yat-sen University
[41] Sun Yat-sen University Cancer Center
[42] Traditional Chinese Medicine Hospital of Guangdong Province
[43] Zhanjiang 524000
[44] Zhongshan 528403
[45] Zhongshan Municipal People’s Hospital
[46] Zhujiang Hospital
[47] the First Affiliated Hospital of Guangdong Pharmaceutical University
[48] the First Affiliated Hospital of Guangzhou Medical University
[49] the First Affiliated Hospital of Sun Yat-sen University
[50] the Third Affiliated Hospital of Guangzhou Medical University