@article{04081520ddd611db9628000ea68e967b,
title = "Local and national electronic databases in Norway demonstrate a varying degree of validity",
author = "C.M. Lofthus and I Cappelen and E.K. Osnes and J.A. Falch and Kristiansen, \{Ivar S{\o}nb{\o}\} and A.W. Medhus and L. Nordsletten and H. Meyer",
year = "2005",
doi = "10.1016/j.jclinepi.2004.07.003",
language = "English",
volume = "58",
pages = "280--285",
journal = "Journal of Clinical Epidemiology",
issn = "0895-4356",
publisher = "Elsevier",
number = "3",
}