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Int J Public Health. 2014 Feb;59(1):207-10. doi: 10.1007/s00038-013-0469-y. Epub 2013 Apr 19.

How important are paper copies of questionnaires? Testing invitations modes when studying social inequalities in smoking among young adults.

Author information

1
Institut de recherche en santé publique de l'Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada, thierry.gagne@umontreal.ca.
PMID:
23604052
DOI:
10.1007/s00038-013-0469-y
[Indexed for MEDLINE]

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