Affiliation: | 1. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsangnam‐do, Republic of Korea;2. Department of infectious diseases, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea;3. Department of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea |