Gjestland, T. “The Oslo Study of Untreated Syphilis; a Re-Study of the Boeck-Bruusgaard Material Concerning the Fate of Syphilitics Who Receive No Specific Treatment; A Preliminary Report”. Acta Dermato-Venereologica, vol. 35, no. 34, May 2021, pp. 3-368, doi:10.2340/00015555343368.