RT Journal Article SR Electronic T1 Antenatal screening for syphilis JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 345 OP 346 DO 10.1136/sti.2007.026633 VO 83 IS 5 A1 Beng T Goh A1 Alicia C Thornton YR 2007 UL http://sti.bmj.com/content/83/5/345.1.abstract AB