Retracted: Analysis of the Effect of Applying Ultrasound-Guided Nerve Block Anesthesia to Fracture Patients in the Context of Internet-Based Blockchain.
作者信息
Healthcare Engineering Journal Of
出版信息
J Healthc Eng. 2023 Oct 4;2023:9821891. doi: 10.1155/2023/9821891. eCollection 2023.