1. Graduate Institute of Clinical Medical Sciences; Chang Gung University; Taoyuan Taiwan
2. School of Nursing; National Yang-Ming University; Taipei Taiwan
3. Department of Pediatric; Chang Gung Children's Hospital; Taoyuan Taiwan
4. Department of Pediatrics; College of Medicine; National Taiwan University; Taipei Taiwan
5. Department of Nursing; Chang Gung Children's Hospital; Taoyuan Taiwan
6. Department of Public Health and Primary Care; KU Leuven-University of Leuven; Belgium