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| The Preventive Effect of Metoclopramide Combined with Tropisetron on Postoperative Nausea and Vomiting in Elderly Patients Undergoing Colorectal Cancer Surgery with General Anesthesia |
| JIN Yunsong |
| First-author's address: Department of Anesthesiology, the Second People's Hospital of Dexing City, Dexing 334224, China |
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