1. Clinical Informatics and Medical Statistics Research Center Chang Gung University Taoyuan Taiwan
2. Department of Medical Education Chang Gung Memorial Hospital Chiayi Taiwan
3. Department of Computer Science National Yang Ming Chiao Tung University Hsinchu Taiwan
4. Department of Emergency Medicine Chang Gung Memorial Hospital Linkou Taiwan
5. W. Harry Feinstone Department of Molecular Microbiology and Immunology The Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA
6. Department of Emergency Medicine Johns Hopkins University School of Medicine Baltimore Maryland USA
7. Department of Emergency Medicine Chang Gung Memorial Hospital Keelung Taiwan