1. Infectious Diseases Department, Pediatric Hospital, National Medical Center, XXI Century, Mexican Institute of Social Security, Mexico City 06720, Mexico
2. Neurosurgery Department, Pediatric Hospital, National Medical Center, XXI Century, Mexican Institute of Social Security, Mexico City 06720, Mexico
3. Analysis and Synthesis of Evidence Research Unit, National Medical Center, XXI Century, Mexican Institute of Social Security, Mexico City 06720, Mexico