Comment On: Valette et al. Melanocortin-4 Receptor Mutations and Polymorphisms Do Not Affect Weight Loss after Bariatric Surgery. PLOS ONE 2012; 7(11):E48221

• David Meyre ,

  * E-mail: meyred@mcmaster.ca

  Affiliation Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada

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• Philippe Froguel,

  Affiliations Centre National de la Recherche Scientifique (CNRS) Unité Mixte de Recherche (UMR) 8199, Lille Pasteur Institute, Lille, Nord, France, Department of Genomics of Common Disease, Imperial College London, London, United Kingdom

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• Fritz F. Horber,

  Affiliations Department of Internal Medicine, Landesspital, Vaduz, Liechtenstein, University of Berne, Berne, Switzerland

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• John G. Kral

  Affiliation Department of Surgery, State University of New York Downstate Medical Center, Brooklyn, New York, United States of America

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