Carstam, R, C Hansson, H Rorsman, E Rosengren, NO Sjöberg, and LE. Wirestrand. 1985. “Urinary Excretion of Melanocytic Metabolites in Fertile Women”. Acta Dermato-Venereologica 65 (6):543-45. https://doi.org/10.2340/0001555565543545.