- Correspondence to: Judith DePue, EdD, MPH, Centers for Behavioral and Preventive Medicine, The Miriam Hospital, Coro Building, Suite 500, One Hoppin Street, Providence, RI 02903, USA;
- Received January 12, 2002
- Accepted September 19, 2002
- Revised August 29, 2002
- First published December 1, 2002.
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