1. Neurosyphilis;Schmidt RP,1992
2. Neurosyphilis in human immunodeficiency virus type 1-seropositive individuals. A prospective study;Berger JR;Arch Neurol,1991
3. Neurosyphilis;Ropper AH;N Engl J Med,2019
4. Syphilis: a reemerging infection;Mattei PL;Am Fam Physician,2012
5. Centers for Disease Control and Prevention. Sexually transmitted disease surveillance, 2021. (2023). http.//www.cdc.gov/std/statistics/2021/default.htm.