1. Department of Paediatrics; KK Women's and Children's Hospital; Singapore City Singapore
2. Infectious Disease Service; Department of Paediatrics; KK Women's and Children's Hospital; Singapore City Singapore
3. Yong Loo Lin School of Medicine; National University of Singapore; Singapore City Singapore
4. Duke-National University of Singapore Graduate Medical School; Singapore City Singapore
5. Neurology Service; Department of Paediatrics; KK Women's and Children's Hospital; Singapore City Singapore
6. Department of Pathology and Laboratory Medicine; KK Women's and Children's Hospital; Singapore City Singapore
7. Department of Microbiology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore City Singapore