旋转振动扫痰仪预防长期卧床老年患者坠积性肺炎效果观察
선전진동소담의예방장기와상노년환자추적성폐염효과관찰
Preventing Hypostatic Pneumonia with Rotary-vibratory Ejecting Sputum Instrument for Bed-ridden Old Patients
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