Affiliation: | 1. Allergy and Immunology Department, Children's Hospital, Chihuahua City, Mexico;2. Clinical Immunology Department, National Institute of Pediatrics, Médica Sur Hospital, Mexico City, Mexico;3. Research Methodology Department, Children's Hospital, Chihuahua City, Mexico;4. Pediatric Intensive Care Unit, Médica Sur Hospital, Mexico City, Mexico;5. Intensive Care Unit, National Institute of Pediatrics, Médica Sur Hospital, Mexico City, Mexico;6. Cardiology Department, National Institute of Pediatrics, Médica Sur Hospital, Mexico City, Mexico |