1. Department of Pediatric Surgery and Liver Transplantation, Femme Mere Enfant University Hospital, Lyon, France
2. Department of General Surgery and Liver Transplantation, Croix Rousse University Hospital, Lyon, France
3. The Cancer Research Center of Lyon, INSERM U1052, Lyon, France
4. ED 340 BMIC, Claude Bernard Lyon 1 University, F-69622 Villeurbanne, France