RT Journal Article SR Electronic T1 Antenatal infection screening reduced preterm delivery JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 47 OP 47 DO 10.1136/ebm.10.2.47 VO 10 IS 2 YR 2005 UL http://ebm.bmj.com/content/10/2/47.abstract AB