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Impact of postal invitations and user fee on influenza vaccination rates among the elderly: A randomized controlled trial in general practice
Nexøe, JØRgen, Kragstrup, Jakob, Rønne, ToveVolume:
15
Language:
english
Journal:
Scandinavian Journal of Primary Health Care
DOI:
10.3109/02813439709018497
Date:
January, 1997
File:
PDF, 596 KB
english, 1997