BibTex format
@article{Alsaud:2018:10.1136/bmjopen-2017-018178,
author = {Alsaud, A and taddese and filippidis, F},
doi = {10.1136/bmjopen-2017-018178},
journal = {BMJ Open},
title = {Trends and correlates of the public’s perception of the healthcare system in the European Union: a multi-level analysis of Eurobarometer survey data from 2009 to 2013},
url = {http://dx.doi.org/10.1136/bmjopen-2017-018178},
volume = {8},
year = {2018}
}