%0 Journal Article %A Chris Smith %T Improving the evidence base for digital health interventions to increase contraception use %D 2021 %R 10.1136/bmjhci-2021-100346 %J BMJ Health & Care Informatics %P e100346 %V 28 %N 1 %U https://informatics.bmj.com/content/bmjhci/28/1/e100346.full.pdf