Proposal for revised classification of epilepsies and epileptic syndromes. Commission on Classification and Terminology of the International League Against Epilepsy.International League Against Epilepsy1989 Jul-AugTijdschriftartikel
Chronic non-specific lung disease and occupational exposures estimated by means of a job exposure matrix: the Zutphen Study.Kromhout, Heederik, Pouwels, H. Kromhout1989 JunTijdschriftartikel
Impairments, disabilities, and handicaps of very preterm and very-low-birthweight infants at five years of age. The Collaborative Project on Preterm and Small for Gestational Age Infants (POPS) in The NetherlandsVerloove-Vanhorick, Veen, Ens-Dokkum, Schreuder, Brand, Ruys1991 Jul 6Tijdschriftartikel
The prevalence of dementia in Europe: a collaborative study of 1980-1990 findings. Eurodem Prevalence Research GroupBreteler, A. Hofman, C. Brayne, M. Clarke, B. Cooper, Copeland, Dartigues, da Silva-Droux, Hagnell, W.A. Rocca1991 SepTijdschriftartikel
Longitudinal changes in fat distribution in the Western Collaborative Group Study: a 23-year follow-upCarmelli, McElroy, Rosenman1991 JanTijdschriftartikel
Early photocoagulation for diabetic retinopathyEarly Treatment Diabetic Retinopathy Study Research Group1991 MayTijdschriftartikel