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The Journal of Infection|March 1, 1981
Meningococcal disease in Belgium. Secondary attack rate among household, day-care nursery and pre-elementary school contactsP De Wals, L Hertoghe, I Borlée-Grimée, et al.Archives Francaises De Pediatrie|October 1, 1987
[Prematurity, hypotrophy and perinatal mortality in the Grand Duchy of Luxembourg, 1980-1982]D Hansen-Koenig, P De WalsTropical and Geographical Medicine|July 1, 1989
Poor acceptance of caesarean section in ZimbabweX de Muylder, P de WalsBiology of the Neonate|January 1, 1989
Perinatal health in Belgium: an introductionP Buekens, R Derom, P De WalsCanadian Journal of Public Health = Revue Canadienne De Sante Publique|September 18, 1999
Prevalence of neural tube defects in the province of Quebec, 1992P De Wals, C Trochet, L PinsonneaultCanadian Family Physician Medecin De Famille Canadien|January 5, 2002
Vaccination practices of Quebec family physicians. Influenza vaccination status and professional practices for influenza vaccinationG Baron, P De Wals, F MilordEuropean Journal of Epidemiology|June 1, 1988
Policies for immunization against rubella in European countriesI De la Mata, P De WalsEvaluation & the Health Professions|March 10, 2001
Cost-effectiveness of a lottery for increasing physicians' responses to a mail surveyG Baron, P De Wals, F MilordThe Canadian Journal of Infectious Diseases = Journal Canadien Des Maladies Infectieuses|December 27, 2007
Evaluation of the rubella surveillance system in QuebecL Perron, P De Wals, F MilordMedecine Tropicale : Revue Du Corps De Sante Colonial|September 1, 1982
[Methods for analyzing the frequency, prevalence and the duration of asymptomatic carriage of Neisseria meningitidis. Longitudinal study of a school population in Belgium]P De Wals, C Gilquin, S De MaeyerPageof 10