1. GREDECO (Group of Research and Evaluation in Dermatology and Cosmetology), 69 Rue de la Tour, 75016 Paris, France
2. Laboratoire Innotech International, 22 Avenue Aristide Briand, 94110 Arcueil, France
3. Inferential, 35, Rue Godot de Mauroy, 75009 Paris, France