Funding

All authors had financial support (unrestricted grants) from the French National PHRC, the Francophone Society for Diabetes, Novo-Nordisk Foundation, and Merck-Serono Company for the submitted work; there were no financial relationships with any organizations that might have had an interest in the submitted work. In the preceding 3 years, there were no other relationships or activities that might have influenced the submitted work.

Conflicts of Interests/Competing interests

Jean Doucet, Olivia Guérin, Caroline Hilbert, Lyse Bordier, Julien Wils, Jacques Bénichou, and Bernard Bauduceau have no conflicts of interest that are directly relevant to the content of this article.

Ethics Approval

The study protocol was submitted to the French CCTIRS and CNOM Ethics Committees and was approved on 9 April, 2009 and 7 May, 2009, respectively.

Consent to Participate

Not applicable.

Consent for Publication

Not applicable.

Availability of Data and Material

Not applicable.

Code Availability

Not applicable.

Authors’ Contributions

Conceptualization: JD, BB; methodology and data collection: JD, CH, OG; formal analysis and investigation: JD, OG, JB; writing, original and reviewed draft preparation: JD; complementary analysis for revision: OG, JW; funding acquisition: JD, BB; supervision: JD.