?:authorAffiliation
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[\'Department of Respiratory and Critical Care Medicine, the Second Hospital of Hebei Medical University, Shijiazhuang 050004, China.\', \'Department of Radiology, Hebei Armed Police Corps Hospital, Shijiazhuang 050080, China.\', \'Department of Respiratory Medicine, the Third Hospital of Hebei Medical University, Shijiazhuang 050051, China.\', \'Department of Respiratory Medicine, Shijiazhuang People\'s Hospital, Shijiazhuang 050011, China.\', \'Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang 050010, China.\']
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