1. Division of Plastic Surgery, Department of Medical and Surgical Sciences for Children & Adults, University Hospital of Modena and Reggio Emilia, 41124 Modena, Italy
2. Plastic Surgery Department, IRCCS Azienda Ospedaliero-Universitaria Sant’Orsola di Bologna, Via Massarenti 9, 40138 Bologna, Italy
3. Dipartimento di Scienze Mediche e Chirurgiche (DIMEC), University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
4. Paediatric Surgery Department, IRCCS Azienda Ospedaliero-Universitaria Sant’Orsola di Bologna, Via Massarenti 9, 40138 Bologna, Italy