1 Pediatric Hepatology, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", Pediatrics Section, University of Salerno, Baronissi Salerno, Italy.
2 Internal Medicine, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", Pediatrics Section, University of Salerno, Baronissi Salerno, Italy.