1 Post-Graduate School of Pediatrics, Department of Health Sciences, Anna Meyer Children's University Hospital, University of Florence, Florence, Italy.
2 Unit of Pediatric Cardiology, Department of Pediatrics, Foundation IRCCS Polyclinic San Matteo, Pavia, Italy.
3 Unit of Dermatology, Department of Pediatrics, Anna Meyer Children's University Hospital, Florence, Italy.
4 Unit of Pediatric Cardiology, Department of Pediatrics, Anna Meyer Children's Hospital, Florence, Italy.
5 Department of Pediatrics, Clinic of Pediatrics, Foundation IRCCS Polyclinic San Matteo, University of Pavia, Pavia, Italy.
6 Unit of Pediatric Cardiology, Department of Pediatrics, Anna Meyer Children's Hospital, Florence, Italy - giulioporcedda@yahoo.it.