1. Department of Dermatology Rio de Janeiro State University (UERJ) Rio de Janeiro Rio de Janeiro Brazil
2. Trichology Unit, Dermatology Department, Ramón y Cajal University Hospital, Instituto Ramón y Cajal de Investigación Sanitaria University of Alcalá Madrid Spain
3. The Mole Clinic, Private Practice Ancaster Ontario Canada
4. Department of Dermatology and Radiotherapy São Paulo State University Botucatu São Paulo Brazil