TY - GEN AU - Webster,L A AU - Rolfs,R T TI - Surveillance for primary and secondary syphilis--United States, 1991 SN - 1545-8636 PY - 1993///0909 KW - Female KW - Humans KW - Male KW - Population Surveillance KW - Syphilis KW - epidemiology KW - United States N1 - Publication Type: Journal Article ER -