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European Journal of Pediatrics|September 1, 1987
Quality of perinatal death registration. A study in Hainaut, BelgiumL Hertoghe, P De Wals, M Piron, et al.
The Journal of Infection|May 1, 1984
Mortality in meningococcal disease in BelgiumP De Wals, L Hertoghe, G Reginster, et al.
Revue D'Epidemiologie Et De Sante Publique|January 1, 1986
[Definition and classification of perinatal mortality]L Hertoghe, P de Wals, P Van Reempts, et al.
The Journal of Infection|September 1, 1984
Validity of the recording of meningococcal disease according to various sources of informationP De Wals, L Hertoghe, S De Maeyer, et al.
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.
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