Ruiz de Erenchun F, Vázquez-Doval F J, Contreras Mejuto F, Quintanilla E
Department of Dermatology, University Clinic, School of Medicine, University of Navarra, Pamplona, Spain.
J Am Acad Dermatol. 1992 Jul;27(1):115-6. doi: 10.1016/s0190-9622(08)80822-5.