Acknowledgements
The authors thanks all the people involved in the collection of the data: Clarisse DUPIN, Florence LE GALL, Caroline PIAU, François BENEZIT, Mikaël MORICONI
Data availability
The data are available from the corresponding author for reasonable demand.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Author contributions
All authors contributed to the acquisition of data. PF, CC and NM conducted the statistical analysis, CC and NM contributed to the study conception and design as well as the analysis and interpretation of the data. CC and NM drafted the manuscript, and all authors critically revised the manuscript and approved the final version.