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Ensure words are spelled correctly. Try rephrasing keywords or using synonyms. Try less specific keywords. Make your queries as concise as possible.

来自某机构的研究人员针对高风险肺癌患者的手术选择难题，开展了一项回顾性研究，比较机器人辅助胸腔镜手术(RATS)、视频辅助胸腔镜手术(VATS)和开胸手术(OT)的临床结局。通过倾向性匹配分析31例RATS、31例VATS和31例OT患者发现，RATS组住院时间(LOS)和重症监护时 ...