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Epidemiology and Infection|May 19, 2001
Prognostic factors for influenza-associated hospitalization and death during an epidemicE Hak, T J Verheij, G A van Essen, et al.The American Journal of Medicine|November 3, 2001
Introducing a pneumococcal vaccine to an existing influenza immunization program: vaccination rates and predictors of noncomplianceW Opstelten, E Hak, T J Verheij, et al.Scandinavian Journal of Primary Health Care|February 24, 2001
Effectiveness of a co-ordinated nation-wide programme to improve influenza immunisation rates in The NetherlandsE Hak, R P Hermens, A W Hoes, et al.American Journal of Epidemiology|April 17, 2003
Conventional influenza vaccination is not associated with complications in working-age patients with asthma or chronic obstructive pulmonary diseaseE Hak, A W Hoes, D E Grobbee, et al.Family Practice|June 5, 1998
Improving influenza vaccination coverage among high-risk patients: a role for computer-supported prevention strategy?E Hak, G A van Essen, W A Stalman, et al.Journal of Clinical Epidemiology|October 27, 2004
A nested case-control study of influenza vaccination was a cost-effective alternative to a full cohort analysisE Hak, F Wei, D E Grobbee, et al.Vaccine|March 18, 2003
Design of the Dutch prevention of influenza, surveillance and management (PRISMA) studyE Hak, S van Loon, E Buskens, et al.Journal of Epidemiology and Community Health|May 14, 1998
Is immunising all patients with chronic lung disease in the community against influenza cost effective? Evidence from a general practice based clinical prospective cohort study in Utrecht, The NetherlandsE Hak, G A van Essen, E Buskens, et al.Vaccine|April 20, 2005
Negative attitude of highly educated parents and health care workers towards future vaccinations in the Dutch childhood vaccination programE Hak, Y Schönbeck, H De Melker, et al.The British Journal of General Practice : the Journal of the Royal College of General Practitioners|June 1, 1997
Population-based prevention of influenza in Dutch general practiceE Hak, R P Hermens, G A van Essen, et al.Pageof 66