From the Department of Dermatology, Hospital del Mar, Barcelona, Hospital del Mar., Passeig Marítim, Barcelona, Spain
Conflict of interest: None declared.
Correspondence: Gemma Martín-Ezquerra, MD, PhD, Department of Dermatology, Hospital del Mar, Passeig Marítim 25–29, 08003 Barcelona, Spain. E-mail: Gmartin@hospitaldelmar.cat.
Received for publication August 6, 2013, and accepted September 3, 2013.