?:authorAffiliation
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[\'Department of Emergency Medicine, Peking University Third Hospital, Beijing, China.\', \'Department of Orthopedics, Peking University Third Hospital, Beijing, China.\', \'Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China.\', \'Clinical Epidemiology Research Center, Peking University Third Hospital, Beijing, China.\', \'Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China. Electronic address: puh3shenning@bjmu.edu.cn.\']
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