BibTex format
@article{Pizzo:2014:10.1111/hex.12204,
author = {Pizzo, E and Doyle, C and Matthews, R and Barlow, J},
doi = {10.1111/hex.12204},
journal = {Health Expectations},
pages = {1918--1926},
title = {Patient and public involvement: how much do we spend and what are the benefits?},
url = {http://dx.doi.org/10.1111/hex.12204},
volume = {18},
year = {2014}
}