1. Department of Pediatrics, Taichung Veterans General Hospital, Taichung 40705, Taiwan
2. Department of Pediatrics, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
3. School of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
4. Department of Emergency Medicine, Tung’s Taichung MetroHarbor Hospital, Taichung 433, Taiwan
5. Department of Nursing, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli 79-9, Taiwan
6. Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
7. Laboratory of Epidemiology and Biostastics, Changhua Christian Hospital, Changhua 500, Taiwan
8. Department of Emergency Medicine, Chang Bing Show Chwan Memorial Hospital, Changhua 505, Taiwan
9. Division of Cardiology, Department of Medicine, Taichung Tzu Chi Hospital, The Buddhist Tzu Chi Medical Foundation, Taichung 427413, Taiwan
10. Department of Medicine, College of Medicine, Tzu Chi University, Hualien 970, Taiwan
11. College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
12. Department of Pediatrics, Chiayi Chang Gung Memorial Hospital, Chiayi 613, Taiwan