Changing patterns of late syphilis.
D006801:Humans; D009494:Neurosyphilis / Q000453:epidemiology* / Q000517:prevention & control; D010406:Penicillins / Q000627:therapeutic use; D011044:Poland; D013587:Syphilis / Q000188:drug therapy; D013588:Syphilis Serodiagnosis; D013589:Syphilis, Cardiovascular / Q000453:epidemiology*; D013606:Tabes Dorsalis / Q000453:epidemiology
D010406:Penicillins