Efficacy of Butorphanol and Tramadol for Postoperative Pain Control following Tongue Surgery
YU Pi-jun, HUANG Yan, LI Qi-fang, CHEN Zhi-feng, XU Hui, JIANG Hong
《Journal of Oral and Maxillofacial Surgery》 . 2013, (5): 361 -363 .  DOI: 10.3969/j.issn.1005-4979.2013.05.008

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