联合冲洗气囊上至口鼻咽腔滞留物预防呼吸机相关性肺炎的研究
연합충세기낭상지구비인강체류물예방호흡궤상관성폐염적연구
Study for Prevention of Ventilator-associated Pneumonia Treated by Joint Washing of Things Left in the Airbag and The Nose and Mouth Pharynx
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