Letter to the editor regarding: "The analgesic efficacy of iPACK after knee surgery: A systematic review and meta-analysis with trial sequential analysis"
1 West China School of Nursing, Sichuan University, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, PR China.
2 Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, PR China.
3 West China School of Nursing, Sichuan University, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, PR China. Electronic address: ningning6405@163.com.