1 Center for Dermatology and Hair Diseases Professor Trüeb and University of Zurich, Switzerland. Electronic address: r.trueeb@derma-haarcenter.ch.
2 Skinterface, Hair Clinic, Tournai and Brussels, Belgium.
3 Department of Dermatology, Universidade Federal Fluminense, Centro de Ciências Médicas, Hospital Universitário Antonia Pedro, Niterói-Rio de Janeiro Brazil.
4 Department of Dermatology, Medical University, Graz, Austria.
5 Department of Dermatology, Yonsei University, Wonju College of Medicine, Gangwon-do, Republic of Korea.
6 1st Department of Dermatology-Venereology, Aristotle University Medical School, Hospital of Skin and Venereal Diseases, Thessaloniki, Greece.
7 Department of Dermatology, Alvaro Alvim School Hospital, Campos dos Goytacazes, Rio de Janeiro, Brazil.
8 Center for Dermatology and Hair Diseases Professor Trüeb and University of Zurich, Switzerland.