RT Journal Article SR Electronic T1 Investigating the microbial aetiology of pelvic inflammatory disease JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 424 OP 425 DO 10.1136/sti.79.5.424-a VO 79 IS 5 A1 D Taylor-Robinson YR 2003 UL http://sti.bmj.com/content/79/5/424.2.abstract AB