Martha M. Zapata-Tarrés, Coordinating Commission of the Institutos Nacionales de Salud y Hospitales de Alta Especialidad, Mexico City, Mexico
Liliana Velasco-Hidalgo, Oncology Service, Instituto Nacional de Pediatría, Mexico City, Mexico
Alejandro González-Garay, Department of Methodology Research, Instituto Nacional de Pediatría, Mexico City, Mexico
Rocío Cárdenas-Cardos, Departmento de Oncología Pediátrica; Instituto Nacional de Pediatría, Mexico City, Mexico
Roberto Rivera-Luna, Oncology Service, Instituto Nacional de Pediatría, Mexico City, Mexico