两种不同护理方法对老年肺部感染咳痰无力患者咳痰能力恢复的效果观察
량충불동호리방법대노년폐부감염해담무력환자해담능력회복적효과관찰
The effect observation of two nursing methods on the expectoration capacity recovery in elderly patents with lung infection and expectoration weakness
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