Author Contributions: Dr Goujon had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Goujon, Gay, and Vabres. Acquisition of data: Goujon, Beer, Gay, and Sandre. Analysis and interpretation of data: Goujon, Beer, Gouyon, and Vabres. Drafting of the manuscript: Goujon. Critical revision of the manuscript for important intellectual content: Beer, Gay, Sandre, Gouyon, and Vabres. Statistical analysis: Goujon and Vabres. Administrative, technical, and material support: Beer and Gay. Study supervision: Beer, Gouyon, and Vabres.