Jansen, T., Bechara, F., Stücker, M., & Altmeyer, P. (2002). Angiokeratoma of the scrotum (Fordyce type) associated with angiokeratoma of the oral cavity. Acta Dermato-Venereologica, 82(3), 208–210. https://doi.org/10.1080/00015550260132532