RT Journal Article SR Electronic T1 Syphilis and HIV infection. JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 353 DO 10.1136/sti.67.4.353 VO 67 IS 4 A1 Savall, R A1 Valls, F A1 Cabré, M YR 1991 UL http://sti.bmj.com/content/67/4/353.1.abstract AB