Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China;
Department of Neurosurgery, Liaoning Cancer Hospital & Institute, Shenyang, Liaoning 110042, China;
Department of Respiratory Medicine, Peking University Shougang Hospital, Beijing 100041, China;
Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China;
Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing 100034, China;