- Correspondence to Dr Gaëlle Coureau, Université Bordeaux Segalen, ISPED, Equipe Santé Travail Environnement, 146 rue Léo Saignat, 33076 Bordeaux, Cedex, France;
- Received 23 July 2013
- Revised 7 April 2014
- Accepted 15 April 2014
- Published online 9 May 2014.
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