%0 Journal Article %A Glyn Elwyn %A Eugene Nelson %A Andreas Hager %A Amy Price %T Coproduction: when users define quality %D 2020 %R 10.1136/bmjqs-2019-009830 %J BMJ Quality & Safety %P 711-716 %V 29 %N 9 %U https://qualitysafety.bmj.com/content/qhc/29/9/711.full.pdf