About the Authors

Sylvain Mathieu

Affiliations INSERM U738, Centre d'épidémiologie Clinique, French Cochrane Center, University Paris Descartes et Hotel Dieu, Paris, France, Department of Rheumatology, University Clermont 1, Clermont-Ferrand, France

An-Wen Chan

Affiliation Women's College Research Institute, University of Toronto, Toronto, Ontario, Canada

Philippe Ravaud

philippe.ravaud@htd.aphp.fr

Affiliation INSERM U738, Centre d'épidémiologie Clinique, French Cochrane Center, University Paris Descartes et Hotel Dieu, Paris, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SM AWC PR. Performed the experiments: SM. Analyzed the data: SM AWC PR. Contributed reagents/materials/analysis tools: SM AWC PR. Wrote the paper: SM AWC PR.