Author contributions
C.L. and X.M. had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Concept and design: JL.T, A.B. and X.M., with advice from all authors. Acquisition of data: C.L., R.S, A.B., F.M. S.A., N.F and A.P. Analysis or interpretation of data: C.L. and X.M. Drafting of the manuscript: C.L. and X.M. Critical revision of the manuscript for important intellectual content: All authors. Statistical analysis: C.L. and X.M. Administrative, technical, or material support: C.L., A.B. and X.M. Supervision: JL.T. and X.M. All authors read and approved by the final manuscript.