1. Pediatric Institute of Southern Switzerland Ente Ospedaliero Cantonale Bellinzona Switzerland
2. Family Medicine, Faculty of Biomedical Sciences Università della Svizzera Italiana Lugano Switzerland
3. Faculty of Biomedical Sciences Università della Svizzera Italiana Lugano Switzerland
4. Pediatric Unit Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
5. Department of Clinical Sciences and Community Health Università degli Studi di Milano Milan Italy
6. Pediatric Cardiology Unit, Department of Pediatrics Centre Hospitalier Universitaire Vaudois and University of Lausanne Lausanne Switzerland
7. Heart Failure and Transplantation, Department of Pediatric Cardiology Great Ormond Street Hospital London UK