- Correspondence to: Dr G B Frisoni, Laboratory of Epidemiology and Neuroimaging, IRCCS San Giovanni di Dio-FBF, via Pilastroni 4, 25125 Brescia, Italy;
- Received February 19, 2002
- Accepted August 8, 2002
- Revised June 14, 2002
- First published December 1, 2002.
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