D. Elkin, Vladimir, and Tatiana G. Sedova. “On Issues Concerning the European Syphilis Epidemic of the Late 15th to Early 16th Centuries”. History of Medicine 5, no. 3 (June 30, 2018). Accessed December 4, 2024. https://historymedjournal.com/HOM/index.php/medicine/article/view/216.