A proposed strategy for international collaborative research in brain aging and Alzheimer's disease.

A description and discussion are given of several of the programmes initiated by the United States' National Institute on Aging that could be expanded to facilitate multicentre collaboration studies. It includes: the Alzheimer's Disease Research Centers; the Alzheimer's Disease Patient Registry Program; the World Health Organization Special Programme for Research on Aging; and how collaborative links with scientists working on this disease in other countries may be established.