1 Pediatric Institute of Southern Switzerland, Ospedale San Giovanni, Bellinzona, Switzerland.
2 Pediatric Cardiology Unit, Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), and University of Lausanne, 1010, Lausanne, Switzerland.
3 Pediatric Institute of Southern Switzerland, Ospedale San Giovanni, Bellinzona, Switzerland. [email protected].
4 Faculty of Biomedical Sciences, Università della Svizzera Italiana, Via Buffi 13, Lugano, Switzerland. [email protected].
5 Pediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
6 Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy.