%0 Journal Article %A David Barlow %T Use of condoms: pitfalls of retrospective case-note analysis %D 2018 %R 10.1136/sextrans-2017-053181 %J Sexually Transmitted Infections %P 130-130 %V 94 %N 2 %U https://sti.bmj.com/content/sextrans/94/2/130.full.pdf