1. Unidad Nacional de Oncología Pediátrica, Guatemala City, Guatemala
2. Department of Internal Medicine, University of South Florida, Tampa, FL
3. Hospital Nacional de Niños Benjamín Bloom, San Salvador, El Salvador
4. Hospital Nacional de Niños Dr. Carlos Sáenz Herrera, San José, Costa Rica
5. Hospital Infantil Dr Robert Reid Cabral, Santo Domingo, Dominican Republic
6. Hospital Infantil Manuel de Jesus Rivera “La Mascota,” Managua, Nicaragua
7. Hospital del Niño Dr José Renán Esquivel, Panama, Panama
8. Hospital Escuela Universitario, Tegucigalpa, Honduras
9. Hôpital Saint Damien, Tabarre, Haiti
10. Department of Global Pediatric Medicine, St Jude Children’s Research Hospital, Memphis, TN
11. Department of Infectious Diseases, St Jude Children’s Research Hospital, Memphis, TN