- Correspondence to:
Professor P M Matthews, Centre for Functional Magnetic Resonance Imaging of the Brain (fMRIB), John Radcliffe Hospital, Headley Way, Headington, Oxford OX3 9DU, UK;
- Received May 17, 2001
- Revised August 9, 2001
- Accepted September 27, 2001
- First published February 1, 2002.
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