1 Department of Digestive, Hepato-Biliary Surgery and Liver Transplantation, Pitié-Salpêtrière Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France; Paris Cité University, Inserm, U1275 CAP Paris-Tech, 75010 Paris, France. Electronic address: marc.pocard@gmail.com.
2 Department of Digestive Surgery, Rouen University Hospital, 1, rue de Germont, 76000 Rouen, France. Electronic address: Jean-jacques.tuech@chu-rouen.fr.