异丙酚与异丙酚联合芬太尼用于老年患者无痛纤支镜的临床研究
이병분여이병분연합분태니용우노년환자무통섬지경적림상연구
Clinical study Propofol and Propofol-Fentanyl in Painless Fiberoptic Bronchoscopy of Elderly Patients
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