1 Department of Emergency Medicine, Mackay Memorial Hospital, Taipei, Taiwan.
2 Department of Emergency Medicine, Mackay Memorial Hospital, Taipei, Taiwan; Poison Center, Department of Emergency Medicine, Mackay Memorial Hospital, Taipei, Taiwan; Department of Nursing, Yuanpei University of Medical Technology, Hsinchu, Taiwan; Department of Medicine, Mackay Medical College, New Taipei City, Taiwan; Mackay Junior College of Medicine, Nursing and Management, Taipei, Taiwan. Electronic address: yjsu.5885@mmh.org.tw.