The effectiveness of the epidemiological approach to syphilis control.
D004812:Epidemiologic Methods; D005380:Financing, Government; D006801:Humans; D010406:Penicillins / Q000627:therapeutic use; D011315:Preventive Medicine; D013587:Syphilis / Q000188:drug therapy / Q000517:prevention & control*; D013997:Time Factors; D014481:United States
D010406:Penicillins