RT Journal Article SR Electronic T1 Danish health register study: a randomised trial with findings about the implementation of chlamydia screening, but not about its benefits JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 86 OP 87 DO 10.1136/sti.2010.048082 VO 87 IS 2 A1 Kate Soldan A1 Stuart M Berman YR 2011 UL http://sti.bmj.com/content/87/2/86.abstract AB