@book{511681,
	author = {Bartoll, X. and et al.},
	title = {Health and health behaviours before and during the Great Recession, overall and by socioeconomic status, using data from four repeated cross-sectional health surveys in Spain (2001-2012)},
	url = {http://dx.doi.org/10.1186/s12889-015-2204-5}
}