1 Department of Dermatology, Hospital Universitario Central de Asturias, Oviedo, Spain.
2 UGC Farmacia, Hospital Universitario Central de Asturias, Oviedo, Spain.
3 Department of Dermatology, Hospital Universitario Central de Asturias, Oviedo, Spain; Dermatology, Department of Medicine, University of Oviedo, Oviedo, Spain. Electronic address: jorgesantosjuanes@gmail.com.