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| Effect of Ultrasound-guided Serratus Anterior Plane Block Combined with Rectus Sheath Block on Postoperative Pain and Safety in Patients Undergoing Hepatobiliary Surgery |
| YAN Pinghua, YANG Tongxia |
| First-author's address: Department of Anesthesiology, Fengcheng City People's Hospital, Fengcheng 331100, China |
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Received: 12 October 2023
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