José I. Castillo-Bejarano, Pediatric Infectious Diseases Service, Department of Pediatrics, “Dr. José Eleuterio González” University Hospital, Autonomous University of Nuevo León, Nuevo Leon, Mexico
Rosalaura V. Villarreal-González, Allergy and Clinic Immunology, National System of Researchers, CONACYT (by its Spanish acronym); School of Medicine, “Dr. José Eleuterio González” University Hospital, Autonomous University of Nuevo León. Monterrey. Nuevo Leon, Mexico