1Assistance Publique-Hôpitaux de Paris, University Paris Descartes, Department of Dermatology, Hôpital Cochin, Paris, France

2Assistance Publique-Hôpitaux de Paris, University Paris Descartes, Department of Pathology, Hôpital Cochin, Paris, France

3Laboratory of Dermatopathology, Mathurin Moreau, Paris, France

4Department of Obstetrics and Gynecology and Reproductive Medicine, Institut David Elia, Hopital Foch, Faculté de Médecine Paris Ouest, Suresnes, France

Reprint requests to: Micheline Moyal-Barracco, MD, 4 rue Léon Delhomme, 75015 Paris. E-mail: [email protected]

The authors have declared they have no conflicts of interest.

The study was registered by the French Data Protection Authorities (CNIL; Commission Nationale de l'Informatique et des Libertés): ref MR-004; number: 2220046.