RT Journal Article SR Electronic T1 Pathogenesis of pelvic inflammatory disease. JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 9 OP 17 DO 10.1136/sti.69.1.9 VO 69 IS 1 A1 L Weström A1 P Wölner-Hanssen YR 1993 UL http://sti.bmj.com/content/69/1/9.abstract AB