1. Department of Microbiology, Research Institute for Tropical Medicine, Muntinlupa City, Philippines
2. Department of Pediatrics, Philippine General Hospital, Manila, Philippines
3. Department of Pediatrics, University of Perpetual Help Dalta Medical Center, Las Piñas City, Philippines
4. Institute of Child Health and Human Development, University of the Philippines Manila – National Institutes of Health, Philippines
5. De La Salle Medical and Health Sciences Institute, Cavite, Philippines
6. St. Luke’s Medical Center, Quezon City, Philippines
7. Philippine Heart Center, Quezon City, Philippines
8. Department of Pediatrics, Perpetual Succour Hospital, Cebu, Philippines
9. Department of Pediatrics, Southern Philippines Medical Center, Davao City, Philippines
10. Department of Pediatrics, Philippine General Hospital, University of the Philippines Manila, Philippines