Woznicová, Vladana, and Monika Heroldová. “Detection of Treponema Pallidum DNA in the Serum of an Adequately Treated Patient With Latent Syphilis”. Acta Dermato-Venereologica, vol. 87, no. 4, May 2007, pp. 379-80, doi:10.2340/00015555-0259.