BibTex format
@article{Pannick:2015:10.1136/bmjopen-2014-007510,
author = {Pannick, S and Beveridge, I and Ashrafian, H and Long, SJ and Athanasiou, T and Sevdalis, N},
doi = {10.1136/bmjopen-2014-007510},
journal = {BMJ Open},
title = {A stepped wedge, cluster controlled trial of an intervention to improve safety and quality on medical wards: the HEADS-UP study protocol},
url = {http://dx.doi.org/10.1136/bmjopen-2014-007510},
volume = {5},
year = {2015}
}