[1] CHU Toulouse, Hop Purpan, Pole Digest, Serv Chirurg Gen & Digest, F-31059 Toulouse 9, France
[2] Hop Dupuytren, Serv Chirurg Digest Gen & Endocrinienne, F-87042 Limoges, France
[3] IMAD, Serv Clin Chirurg Digest & Endocrinienne, F-44000 Nantes, France
[4] Univ Lille 2, Dept Gen & Endocrine Surg, INSERM,U859, Biotherapy Diabet Serv,Fac Med,CHRU Lille,Pole Re, F-59045 Lille, France
[5] CHU Bordeaux, Dept Chirurg Digest, F-33604 Pessac, France