Halvorsen, JA, T Brevig, T Aas, AG Skar, EM Slevolden, and H. Moi. 2006. “Genital Ulcers As Initial Manifestation of Epstein-Barr Virus Infection: Two New Cases and a Review of the Literature”. Acta Dermato-Venereologica 86 (5):439-42. https://doi.org/10.2340/00015555-0140.