1. Division of Pediatric Neonatology, Department of Pediatrics, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
2. School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
3. Division of Neonatology and Pediatric Hematology and Oncology, Department of Pediatrics, Yunlin Linkou Chang Gung Memorial Hospital, Yunlin, Taiwan
4. Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
5. Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, Taiwan