1. Department of Pediatric Cardiology Hospital Sant Joan de Déu Barcelona Spain
2. Cardiovascular Research Group Sant Joan de Déu Research Institute Barcelona Spain
3. Department of Pediatrics Boston Children's Hospital Boston Massachusetts USA
4. BCNatal ‐ Barcelona Center for Maternal Fetal and Neonatal Medicine, Hospital Sant Joan de Déu ‐ Hospital Clinic University of Barcelona Barcelona Spain
5. Pediatric Intensive Care Unit Hospital Sant Joan de Déu Barcelona Spain
6. Institut de Recerca Sant Joan de Déu University of Barcelona Barcelona Spain
7. Consorcio de Investigación Biomédica en Red de Epidemiología y Salud Pública Madrid Spain
8. Department of Critical Care Medicine University of Pittsburgh Pittsburgh Pennsylvania USA