Official Organ of EASO European Association for the Study of Obesity Editorial Representatives Ellen Blaak, Maastricht Hermann Toplak, Graz DAG Deutsche Adipositas-Gesellschaſt Editorial Representative Martin Wabitsch, Ulm Affiliated with IFSO-EC International Federation for the Surgery of Obesity and Metabolic Disorders – European Chapter Editorial Representative Martin Fried, Prague Editor-in-Chief Hans Hauner, München Assistant Editor Nora Klöting, Leipzig Associate Editor Jennifer Lyn Baker, Frederiksberg Matthias Blüher, Leipzig John E. Blundell, Leeds Ulrich Cuntz, Prien Carl-Erik Flodmark, Malmö Martin Fried, Prague Vojtech Hainer, Prague Berit L. Heitmann, Copenhagen Anja Hilbert, Leipzig Anke Hinney, Essen Christina Holzapfel, Munich Jan Kopecký , Prague John Kral, Brooklyn, NY Bernhard Ludvik, Vienna Dragan Micic, Belgrade Manfred J. Müller, Kiel Annette Schürmann, Potsdam Yves Schutz. Lausanne Pedro Teixeira, Lisbon Hermann Toplak, Graz Matthias Tschöp, Neuherberg Haijun Wang, Beijing Jane Wardle, London Kurt Widhalm, Vienna Tommy Visscher, Zwolle S. Karger GmbH P.O. Box D-79095 Freiburg Editorial Office Attn. Dr. Sven Riestenpatt Editorial Board Hans-Rudolf Berthoud, Baton Rouge, LA Ellen Blaak, Maastricht Karine Clément, Paris Stefan Engeli, Hannover I. Sadaf Farooqi, Cambridge Gema Frühbeck, Pamplona Susanna Hofmann, Neuherberg Martin Klingenspor, Freising Max Lafontan, Toulouse Julian G. Mercer, Aberdeen Vidya Mohamed-Ali, London Dénes Molnár, Pécs Ruben Nogueiras, Santiago de Compostela Jean-Michel Oppert, Paris Andreas F. Pfeiffer, Potsdam Paul T. Pfluger, Neuherberg Stephan Rössner, Bromma Jacob C. Seidell, Amsterdam Antonio J. Torres, Madrid Christian Vaisse, San Francisco, CA Founding Editor Johannes Hebebrand, Essen Vol. 8, Supplement 1, May 2015 Basel · Freiburg · Paris · London · New York · Chennai · New Delhi · Bangkok · Beijing · Shanghai · Tokyo · Kuala Lumpur · Singapore · Sydney Downloaded by: Universidad de Navarra 159.237.12.82 - 5/19/2015 6:19:42 PM