@article{066b5e8b10a94606a591ba81d33f3992,
title = "Methods to assess intended effects of drug treatment in observational studies are reviewed",
keywords = "Epidemiology, Farmacie(FARM), Biomedische technologie en medicijnen, Ziekenhuisstructuur en organisatie van de gezondheidszorg, Public Health",
author = "O.H. Klungel and E.P. Martens and B.M. Psaty and D.E. Grobbee and S.D. Sullivan and B.H.Ch. Stricker and H.G.M. Leufkens and \{de Boer\}, A.",
year = "2004",
language = "Undefined/Unknown",
volume = "57",
pages = "1223--1231",
journal = "Journal of Clinical Epidemiology",
issn = "0895-4356",
publisher = "Elsevier",
}