Institution: | Yu-Yao Shen, Jing Jiang, Jie Song, Department of Pulmonary and Critical Care Medicine, Yantai Yuhuangding Hospital, Affiliated Hospital of Qingdao University, Yantai 264000, Shandong Province, ChinaJing Zhao, Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China |