Retracted: Study on the Effect of Different Doses of Hydromorphone on the Time Response and Postoperative Analgesia of Ropivacaine in Ultrasound-Guided Suprailiac Fascia Inguinal Block
Evid Based Complement Alternat Med. 2023 Dec 13:2023:9869058.
doi: 10.1155/2023/9869058.
eCollection 2023.