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Géraldine Tournu , Laurent Abramowitz, Camille Couffignal, Frédéric Juguet, Agnès Sénéjoux, Stéphane Berger, Anne-Laure Wiart, Marc Bernard, Françoise Provost, Hélène Pillant-Le Moult, Dominique Bouchard, Jean-Pierre Aubert, for the GREP study group and for the MG-PREVAPROCT study group. BMC Family Practice (2017) 18:78 – DOI 10.1186/s12875-017-0649