?:authorAffiliation
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[\'Department of Intensive Care Medicine, Peking University Shougang Hospital, Beijing, China.\', \'Department of Respiratory and Critical Care Medicine, Second Hospital of Hebei Medical University, Shijiazhuang Hebei, China.\', \'Department of Respiratory and Critical Care Medicine, First Hospital of Hebei Medical University, Shijiazhuang Hebei, China.\']
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