1. Plagues and peoples;McNeill,1976
2. Treponema pallidum (syphilis);Tramont,2000
3. The immune response to infection withTreponema pallidum, the stealth pathogen;Salazar;Microbes Infect,2002
4. Essentials of syphilology;Kampmeier,1943
5. Modern clinical syphilology, diagnosis, treatment: case study;Stokes,1945