1. Division of Pediatrics; School of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile
2. National Heart and Lung Institute; Imperial College London; London UK
3. Respiratory Paediatrics; Royal Brompton Hospital; London UK
4. Department of Pediatrics; School of Medicine; Universidad Nacional de Colombia; Bogotá Colombia
5. Department of Pediatric Pulmonology and Pediatric Critical Care Medicine; School of Medicine; Universidad El Bosque; Bogotá Colombia