- Correspondence to Professor Jean-François Viel, INSERM-IRSET, Department of Epidemiology and Public Health, University Hospital, 2, rue Henri Le Guilloux, Rennes 35033, France;
- Received 22 August 2016
- Revised 21 December 2016
- Accepted 3 January 2017
- Published in print 1 April 2017.
- Published online 14 March 2017.
- Published first 1 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.