1. Department of Child Psychiatry and Sleep Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
2. College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
3. Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
4. Division of Pediatric Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
5. Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan