Seoul National University - Seoul National University Hospital, affiliation not provided to SSRN, Seoul National University - Seoul National University Hospital, Seoul National University - Medical Research Institute, Seoul National University - Department of Emergency Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, Chungbuk National University - Chungbuk National University Hospital, affiliation not provided to SSRN, Chungnam National University - Chungnam National University Hospital, affiliation not provided to SSRN, Chonnam National University - Chonnam National University Hospital, affiliation not provided to SSRN, Seoul National University - College of Medicine, Korea University - Korea University Anam Hospital, Kyungpook National University - Kyungpook National University Hospital, University of Ulsan - Asan Medical Center, Sungkyunkwan University - Samsung Medical Center, affiliation not provided to SSRN, affiliation not provided to SSRN and Yonsei University - Wonju College of Medicine