@article{article, title = {{Why is it so difficult to recruit patients to research in emergency care? Lessons from the AHEAD study}}, publisher = {{BMJ}}, url = {{}}, year = {{2015}}, month = {{3}}, author = {{Johnson R and Kuczawski M and Mason S}}, doi = {{10.1136/emermed-2014-204401}}, volume = {{33}}, journal = {{Emergency Medicine Journal}}, issue = {{1}}, pages = {{52-56}}, note = {{Accessed on 2025/05/03}}}