First Online: 29 June 2018
Compliance with Ethical Standards
: S Billioti de Gage, C. Collin, T. Le-Tri, A. Pariente, B. Bégaud, H. Verdoux, R. Dray-Spira and M. Zureik have no conflicts of interest to disclose.
: The open access fee was funded by the French National Agency for Medicines and Health Products Safety (ANSM). The authors have no financial support to disclose. All authors declare no support from any organization for the submitted work and no financial relationships with any organizations that might have an interest in the submitted work.