1 Department of Emergency Medicine, Taipei Medical University Hospital, Taipei, Taiwan MA.
2 Department of Emergency Medicine, Taipei Medical University Hospital, Taipei, Taiwan; Evidence-Based Medicine Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Research Center of Big Data and Meta-analysis, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Institute of Health Policy and Management, College of Public Health, National Taiwan University, Taipei, Taiwan.