1. Department of Pediatric Pulmonology; Hospital Universitario Clinica San Rafael; Bogotá Colombia
2. Department of Pediatrics, School of Medicine; Universidad Nacional de Colombia; Bogota Colombia
3. Department of Pediatric Pulmonology and Pediatric Critical Care Medicine, School of Medicine; Universidad El Bosque; Bogota Colombia
4. Research Unit; Military Hospital of Colombia; Bogota Colombia
5. Department of Pediatric Pulmonology, Hospital Militar Central, Department of Pediatrics; School of Medicine, Universidad Militar Nueva Granada; Bogota Colombia