1 Department of Emergency Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, No. 5, Fuxing St., Guishan Dist, 333, Taoyuan City, Taiwan, Republic of China.
2 The Institute of Health Policy and Management, National Taiwan University, No. 17, Xu-Zhou Road, 100, Taipei, Taiwan.
3 Graduate Institute of Clinical Medical Sciences, Division of Medical Education, College of Medicine, Chang Gung University, No.259, Wenhua 1st Rd.,Guishan Dist, 333, Taoyuan City, Taiwan. allendream0621@gmail.com.