@article{5a0457b079284f46861b4413ca843ae2,
title = "Instrumental variables in influenza vaccination studies: mission impossible?!",
keywords = "Econometric and Statistical Methods: General, Epidemiology, Farmacie(FARM), Geneeskunde(GENK), Medical sciences, Bescherming en bevordering van de menselijke gezondheid, Biomedische technologie en medicijnen, Ziekenhuisstructuur en organisatie van de gezondheidszorg, Public Health",
author = "R.H.H. Groenwold and E. Hak and O.H. Klungel and A.W. Hoes",
year = "2010",
language = "English",
volume = "13",
pages = "132--137",
journal = "Value in Health",
issn = "1098-3015",
publisher = "Elsevier Ltd",
number = "1",
}