About the Authors

Sylvie Bastuji-Garin

sylvie.bastuji-garin@hmn.aphp.fr

Affiliations Université Paris Est Créteil (UPEC), LIC EA4393 (Laboratoire d'Investigation Clinique), Créteil, France, AP-HP, Hôpital Henri-Mondor, Department of Clinical Research and Public Health, Créteil, France, AP-HP, Hôpital Henri-Mondor, Unité de Recherche Clinique (URC), Créteil, France

Emilie Sbidian

Affiliations Université Paris Est Créteil (UPEC), LIC EA4393 (Laboratoire d'Investigation Clinique), Créteil, France, AP-HP, Hôpital Henri-Mondor, Department of Dermatology, Créteil, France

Caroline Gaudy-Marqueste

Affiliation AP-HM, Timone University, Department of Dermatology, Marseille, France

Emilie Ferrat

Affiliations Université Paris Est Créteil (UPEC), LIC EA4393 (Laboratoire d'Investigation Clinique), Créteil, France, Université Paris Est Créteil (UPEC), Faculté de Medecine, Department of General Practice, Créteil, France

Jean-Claude Roujeau

Affiliation AP-HP, Hôpital Henri-Mondor, Department of Dermatology, Créteil, France

Marie-Aleth Richard

Affiliation AP-HM, Timone University, Department of Dermatology, Marseille, France

Florence Canoui-Poitrine

Affiliations Université Paris Est Créteil (UPEC), LIC EA4393 (Laboratoire d'Investigation Clinique), Créteil, France, AP-HP, Hôpital Henri-Mondor, Department of Clinical Research and Public Health, Créteil, France

on behalf of the European Dermatology Network (EDEN)

Membership of the EDEN Group is provided in the Acknowledgments

Competing Interests

The authors declare no support from any organisation for the submitted work. Prof. Bastuji-Garin received speaker fees from Astra-Zeneca France from 2007 to 2011. Prof. Roujeau reported occasional consulting for AB Science; being a former member of the boards of Vertex, Servier, Janssen, Boehringer-Ingelheim, and OM-Pharma; and receiving speaker fees from Menarini in 2011. Prof. Richard reported consulting activities for Pfizer, Leo Pharma, Janssen, Galderma, Abbott, and Novartis; and receiving fees for service on speakers bureaus from Pfizer, Leo Pharma, Janssen, Galderma, Abbott, Pierre Fabre, Merck, and BMS. Dr Sbidian reported receiving fees from Abbott in 2010. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

¶ Membership of the EDEN Group is provided in the Acknowledgments.

Conceived and designed the experiments: SBG ES FCP. Performed the experiments: SBG ES CGM EF JCR MAR FCP. Analyzed the data: SBG ES FCP. Contributed reagents/materials/analysis tools: SBG. Wrote the paper: SBG ES FCP. Critical revision of the manuscript for important intellectual content: CGM EF JCR MAR. Statistical expertise: SBG FCP. Study supervision: SBG.