针刺复合小剂量硬膜外麻醉应用于老年下肢骨科手术的临床观察
침자복합소제량경막외마취응용우노년하지골과수술적림상관찰
Clinical observation of the application of small-dose epidural anesthesia combining acupuncture for elder patients with lower limb orthopaedic surgeries
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