RT Journal Article SR Electronic T1 Prevalence of Chlamydia trachomatis infection in pregnant women in Zaire JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 125 OP 125 DO 10.1136/sti.66.2.125 VO 66 IS 2 YR 1990 UL http://sti.bmj.com/content/66/2/125.1.abstract AB