@book{330199,
	title = {Does health differ between participants and non-participants in the MRI-HUNT study, a population based neuroimaging study? The Nord-Trøndelag health studies 1984–2009},
	publisher = {BMC Medical Imaging},
	url = {http://bmcmedimaging.biomedcentral.com/articles?query=&volume=12&searchType=&tab=keyword}
}