%0 Journal Article %A Sarah Haessler %T The Hawthorne effect in measurements of hand hygiene compliance: a definite problem, but also an opportunity %D 2014 %R 10.1136/bmjqs-2014-003507 %J BMJ Quality & Safety %P 965-967 %V 23 %N 12 %U https://qualitysafety.bmj.com/content/qhc/23/12/965.full.pdf