- Correspondence to Dr Corinne Gower-Rousseau, Service de Santé Publique, Epidémiologie, Economie de Santé et Prévention, Registre Epimad, Maison Régionale de la Recherche Clinique, Centre Hospitalier Universitaire Régional, CS 70001, Lille Cedex 59037, France;
- Received 10 June 2015
- Revised 7 November 2015
- Accepted 9 November 2015
- Published online 11 March 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.