RT Journal Article SR Electronic T1 Relative or absolute? A significant intervention for chlamydia screening with small absolute benefit JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 172 OP 173 DO 10.1136/sextrans-2013-051426 VO 90 IS 3 A1 William C Miller A1 Nadia L Nguyen YR 2014 UL http://sti.bmj.com/content/90/3/172.abstract AB