1. Health Research Coordination; Instituto Mexicano del Seguro Social (IMSS); Mexico City Mexico
2. Pediatric Hematology Services; Hospital General “Gaudencio González Garza”; CMN “La Raza”; IMSS; Mexico City Mexico
3. Medical Research Unit in Clinical Epidemiology; UMAE Hospital de Pediatría CMN “Siglo XXI”; IMSS; Mexico City Mexico
4. Hematology Services; UMAE Hospital de Pediatría; CMN “Siglo XXI”; IMSS; Mexico City Mexico
5. Children's Hospital of Mexico, Federico Gómez; Secretaria de Salud (SS); Mexico City Mexico
6. Hematology Services; Instituto Nacional de Pediatría (INP), SS; Mexico City Mexico
7. Pediatric Hematology Services; CMN “20 de Noviembre”; Instituto de Seguridad Social al Servicio de los Trabajadores del Estado (ISSSTE); Mexico City Mexico
8. Onco-Pediatrics Service; Hospital Juárez de México, SS; Mexico City Mexico
9. Oncology Services; Hospital Pediátrico “Moctezuma”; Secretaría de Salud de la Ciudad de México (SSCDMX); Mexico City Mexico
10. Pediatric Hematology Service; Hospital General de México, SSa; Mexico City Mexico
11. Pediatric Hematology Service; Hospital General Regional (HGR) No. 1 “Dr. Carlos Mac Gregor Sánchez Navarro” IMSS; Mexico City Mexico
12. Pediatric Surgery Service; Hospital General “Gaudencio González Garza”; CMN “La Raza”, IMSS; Mexico City Mexico
13. Pediatric Surgery Service; HGR No. 1 “Dr. Carlos Mac Gregor Sánchez Navarro” IMSS; Mexico City Mexico
14. Pediatric Hospital of Iztacalco; SSCDMX; Mexico City Mexico
15. Pediatric Hospital of Iztapalapa; SSCDMX; Mexico City Mexico
16. Servicio de Pediatría; Hospital General Zona (HGZ) No. 8 “Dr. Gilberto Flores Izquierdo” IMSS; Mexico City Mexico
17. Pediatric Services; Hospital Juárez del Centro, SS; Mexico City Mexico
18. General Hospital of Ecatepec “Las Américas”; Instituto de Salud del Estado de México (ISEM); Mexico City Mexico
19. General Hospital “Dr. Manuel Gea González” SS; Mexico City Mexico
20. Pediatric Hospital “La Villa”; SSCDMX; Mexico City Mexico
21. Pediatric Hospital “San Juan de Aragón”; SSCDMX; Mexico City Mexico
22. Pediatric Services; HGR No. 72 “Lic. Vicente Santos Guajardo”, IMSS; Mexico City Mexico
23. Pediatric Surgery Service, HGZ No. 32; IMSS; Mexico City Mexico
24. Pediatric Surgery Service; Hospital Pediátrico de Moctezuma; SSCDMX; Mexico City Mexico
25. Pediatric Services; Hospital Pediátrico de Tacubaya; SSCDMX; Mexico City Mexico
26. Pediatric ER, HGZ No. 47; IMSS; Mexico City Mexico
27. Pediatric Surgery Service; Hospital Regional “1° Octubre”; ISSSTE; Mexico City Mexico
28. HGR No. 25; IMSS; Mexico City Mexico
29. Pediatric Services; Hospital General de Zona con Medicina Familiar (HGZMF) No. 29 IMSS; Mexico City Mexico
30. Pediatric Surgery Service, HGZ No. 27; IMSS; Mexico City Mexico
31. Oncology Services; INP, SSa; Mexico City Mexico
32. Delegación Regional Estado de México Oriente; IMSS; Mexico City Mexico
33. Molecular Biology Laboratory; UMAE, Hospital de Pediatría; CMN “Siglo XXI”; IMSS; Mexico City Mexico
34. Laboratory of the Coordination of Epidemiological Surveillance and Support in Contingencies; Unidad de Investigación Médica en Inmunología e Infectología; Hospital de Infectología “Dr. Daniel Méndez Hernández”; CMN “La Raza”; IMSS; Mexico City Mexico
35. Medical Research Unit in Immunology and Infectology; Hospital de Infectología “Dr. Daniel Méndez Hernández”; CMN “La Raza”; IMSS; Mexico City Mexico
36. Cancer Genomics Laboratory; Instituto Nacional de Medicina Genómica; Mexico City Mexico
37. Medical Research Unit in Human Genetics; UMAE, Hospital de Pediatría; CMN “Siglo XXI”; IMSS; Mexico City Mexico