1 Department of Dermatology, the Warren Alpert Medical School of Brown University, Providence, Rhode Island.
2 Department of Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, Brazil.
3 Department of Medicine, State University of Ponta Grossa, Ponta Grossa, Brazil.
4 Dermatology Institute, Chula Vista, California.
5 Department of Dermatology and Radiotherapy, UNESP Medical School, Botucatu, Brazil.
6 Department of Dermatology, the Warren Alpert Medical School of Brown University, Providence, Rhode Island. Electronic address: carlos_wambier@brown.edu.