A systematic review of guidelines on the management of patient-controlled analgesia in adult patients with postoperative acute pain
ZHANG Junfeng, CAI Yingying, ZHENG Kexin, CHEN Miaoting, LIU Xingling, WU Yanni
Chinese Journal of Nursing . 2021, (12): 1868 -1875 .  DOI: 10.3761/j.issn.0254-1769.2021.12.018