About the Authors

Pierre Branger

Affiliation Department of Neurology, University Hospital of Caen, Caen, France

Jean-Jacques Parienti

Affiliation Biostatistics and clinical research unit, University Hospital of Caen, Caen, France

Maria Pia Sormani

Affiliation Biostatistics Unit, Department of Health Sciences, University of Genoa, Genoa, Italy

Gilles Defer

defer-gi@chu-caen.fr

Affiliation Department of Neurology, University Hospital of Caen, Caen, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PB JJP GD. Performed the experiments: PB JJP GD. Analyzed the data: PB JJP. Contributed reagents/materials/analysis tools: PB JJP GD. Wrote the paper: PB JJP GD. Critical revisions: MPS.