@article{e94d74e8d86b445996e6fa8daa1ac0a9,
title = "Influenzavaccinatie bij ouderen blijft zinvol: Veel 'confounding' in observationeel onderzoek",
keywords = "Aged, Aged, 80 and over, Female, Humans, Influenza Vaccines, Influenza, Human, Male, Netherlands",
author = "{de Jong}, {Jan C} and Eelko Hak and Osterhaus, {A D M E Ab}",
year = "2010",
language = "Dutch",
volume = "154",
pages = "744--748",
journal = "Nederlands Tijdschrift voor Geneeskunde",
issn = "0028-2162",
publisher = "NLM (Medline)",
}