1 Department of Emergency Medicine, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung 40705, Taiwan.
2 Department of Emergency Medicine, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung 40705, Taiwan; School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Nursing, College of Health, National Taichung University of Science and Technology, Taichung, Taiwan. Electronic address: song9168@pie.com.tw.
3 Center of Neurology, Taichung Veterans General Hospital, Taichung, Taiwan.
4 Department of Pathology and Laboratory Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.