[James]

And gerontology as a key word.

And geriatrics.

Geriatric centers.

Geriatric research.

etc.

Tufts geriatric center put out a good book called Biomarkers a while ago.

Also, if you are a near a university, all you have to do is look through the proffessor list and find the ones in the psych department that specialise in geriatrics.

A half hour convo with one of them will give you more information than you want or need.