- 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 June 10, 2015
- Revised November 7, 2015
- Accepted November 9, 2015
- First published December 8, 2015.
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