Authors
G. Tchernev
Clinic for Dermatology, Venereology and Dermatologic Surgery “Onkoderma”, Sofia, Bulgaria
G. Poterov
Clinic for Dermatology, Venereology and Dermatologic Surgery “Onkoderma”, Sofia, Bulgaria
V. Malev
Clinic for Dermatology, Venereology and Dermatologic Surgery “Onkoderma”, Sofia, Bulgaria