1. Dermatology Department, Cochin-Tarnier University Hospital 89 rue
d'Assas 75006 Paris, France
2. Biological Laboratory, Pasteur-Cerba, 95 Paris, France
3. Curie Institute, 75005 Paris, France
4. Pitié-Salpêtrière University Hospital, 75013 Paris, France
5. Bichat University Hospital, 75018 Paris, France