1. Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan 33382, Taiwan
2. College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
3. Graduate Institute of Clinical Medical Science, Chang Gung University, Taoyuan 33302, Taiwan
4. Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan 33382, Taiwan
5. Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
6. Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan 33382, Taiwan
7. Department of Obstetrics and Gynaecology, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan 33302, Taiwan