Individual Experiences as Cultural – a Cross-cultural Study on Loneliness Among the ElderlyJylhä, JokelaJan-09-1990Tijdschriftartikel
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
A prospective study of acute cerebrovascular disease in the community: the Oxfordshire Community Stroke Project 1981-86Bamford, M. Dennis, Burn, Warlow, Sandercock1990 JanTijdschriftartikel
EuroQol--a new facility for the measurement of health-related quality of life.EuroQol Group1990 DecTijdschriftartikel
Early photocoagulation for diabetic retinopathyEarly Treatment Diabetic Retinopathy Study Research Group1991 MayTijdschriftartikel
Blootstelling aan ultraviolette straling. Een analyse van het probleemveldSlaper, Eggink10/1991Rapport