[1] Charles Univ Prague, Fac Med 1, Clin Ctr Minimally Invas & Bariatr Surg, Prague, Czech Republic
[2] Charles Univ Prague, Fac Med 1, Inst Endocrinol, Prague, Czech Republic
[3] Charles Univ Prague, Fac Med 3, Inst Endocrinol, Prague, Czech Republic
[4] Univ Paris, INSERM, U755, F-75252 Paris, France
[5] Hop Hotel Dieu, AP HP, Paris, France
[6] Univ Minnesota, Dept Surg, Minneapolis, MN 55455 USA
[7] FACN, FICS, CRCSC, Toronto, ON, Canada
[8] Univ Cambridge, Addenbrookes Hosp, Wellcome Clin Res Facil, Sch Clin Med, Cambridge CB2 2QQ, England
[9] Univ Hosp Maastricht, Dept Surg, Maastricht, Netherlands
[10] Clin Lindberg AG, Winterthur, Switzerland
[11] Univ Amsterdam, Acad Med Ctr, Dept Gastroenterol & Hepatol, NL-1105 AZ Amsterdam, Netherlands
[12] Univ Genoa, San Martino Univ Hosp, Genoa, Italy
[13] Beau Site Clin Berne, Hirslanden Grp, Bern, Switzerland
[14] Univ Athens, Sch Med, Dept Endocrinol Metab, Evgenid Hosp, GR-11527 Athens, Greece
[15] Univ Athens, Sch Med, Diabet Unit, Evgenid Hosp, GR-11527 Athens, Greece
[16] Goethe Univ Frankfurt, Sachsenhausen Hosp, D-6000 Frankfurt, Germany
[17] Goethe Univ Frankfurt, Ctr Minimally Invas Surg, D-6000 Frankfurt, Germany
[18] Med Univ Vienna, Dept Pediat Nutr & Metab, Vienna, Austria