1. Pediatric Intensive Care Unit, Centro Hospitalar de São João, Porto, Portugal
2. Pediatric Department, Centro Hospitalar de Trás-os-Montes e Alto Douro, Vila Real, Portugal
3. Department of Intensive Care and Neonatology, University Children’s Hospital, Zurich, Switzerland
4. Department of Congenital Cardiovascular Surgery, University Children’s Hospital, Zurich, Switzerland