1. Department of Pediatrics, Taichung Veterans General Hospital, Taichung 407219, Taiwan
2. Department of Pediatrics, Chung Shan Medical University Hospital, Taichung 408, Taiwan
3. School of Medicine, Chung Shan Medical University, Taichung 408, Taiwan
4. Department of Emergency Medicine, Tungs’ Taichung Metro Harbor Hospital, Taichung 43503, Taiwan
5. Department of Nursing, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli 356006, Taiwan
6. Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70142, Taiwan
7. Laboratory of Epidemiology and Biostastics, Changhua Christian Hospital, Changhua 500, Taiwan
8. Division of Cardiology, Department of Medicine, Taichung Tzu Chi Hospital, The Buddhist Tzu Chi Medical Foundation, Taichung 427213, Taiwan
9. Department of Medicine, College of Medicine, Tzu Chi University, Hualien 97004, Taiwan
10. College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
11. Department of Pediatrics, Chiayi Chang Gung Memorial Hospital, Chiayi 613, Taiwan