RT Journal Article SR Electronic T1 Congenital and perinatal infections prevention, diagnosis and treatment JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 79 OP 79 DO 10.1136/sti.77.1.79-c VO 77 IS 1 A1 Sharland, M YR 2001 UL http://sti.bmj.com/content/77/1/79.4.abstract AB