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