1 Division of Acute Care Surgery, Department of Surgery, Korea University Anam Hospital, Korea University School of Medicine, Seoul, South Korea.
2 Division of Acute Care Surgery, Department of Surgery, Korea University Anam Hospital, Korea University School of Medicine, Seoul, South Korea. [email protected].
3 Department of Internal Medicine, Chungnam University Sejong Hospital, Chungnam National University College of Medicine, Sejong-si, South Korea. [email protected].
4 Department of Anesthesiology and Pain Medicine, Korea University Anam Hospital, Korea University School of Medicine, Seoul, South Korea.
5 Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University School of Medicine, Seoul, South Korea.
6 Department of Internal Medicine, Pusan National University Yangsan Hospital, Pusan National University College of Medicine, Busan, South Korea.
7 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, National Medical Center, Seoul, Republic of Korea.
8 Department of Emergency Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, South Korea.
9 Department of Emergency Medicine, Chungnam National University Hospital, Chungnam National University Medical School, Sejong, South Korea.
10 Department of Internal Medicine, Dong-A University Hospital, Dong-A University College of Medicine, Busan, South Korea.
11 Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea.
12 Department of Emergency Medicine, Inha University Hospital, Inha University School of Medicine, Incheon, South Korea.
13 Department of Internal Medicine, Jeju National University Hospital, Jeju National University School of Medicine, Jeju City, South Korea.