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International Journal of Epidemiology|December 1, 1985
Methods for estimating the duration of bacterial carriageP De Wals, A BouckaertThe Journal of Infection|May 1, 1984
Mortality in meningococcal disease in BelgiumP De Wals, L Hertoghe, G Reginster, et al.The Journal of Infection|March 1, 1983
Longitudinal study of asymptomatic meningococcal carriage in two Belgian populations of schoolchildrenP De Wals, C Gilquin, S De Maeyer, et al.Revue D'Epidemiologie Et De Sante Publique|January 1, 1983
[Policy for the prevention of meningococcal infections in Belgium]P De WalsRevue D'Epidemiologie Et De Sante Publique|January 1, 1994
[Evaluation of teratogenic risk: the contribution of abnormalities registries]P De WalsEuropean Journal of Epidemiology|December 23, 1999
Investigation of clusters of adverse reproductive outcomes, an overviewP De WalsCanadian Journal of Public Health = Revue Canadienne De Sante Publique|September 1, 1996
[Study of immunization promotion against influenza in nursing homes and long term care facilities in Quebec]P De Wals, J DrapeauClinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America|May 23, 1998
Complications and sequelae of meningococcal disease in Quebec, Canada, 1990-1994L Erickson, P De WalsRevue D'Epidemiologie Et De Sante Publique|January 1, 1992
[Vaccination against influenza in nursing homes in Brussels]P De Wals, S DauffenbachEuropean Journal of Epidemiology|December 23, 1999
A method for the follow-up of clusters of adverse reproductive outcomesT Niyonsenga, P De WalsPageof 10