*From the Department of Medicine, Oregon Health Sciences University and Portland Veterans Affairs Medical Center, Portland, Oregon.
† From the Department of Medicine, University of Texas Health Sciences Center - San Antonio and San Antonio Veterans Affairs Medical Center, San Antonio, Texas.
‡ From the Department of Community and Family Medicine, Dartmouth Medical School, Hanover, New Hampshire.
§ From the Department of Pediatrics, Dartmouth Medical School, Hanover, New Hampshire.
This study was supported by grants from the John D. and Catherine T. MacArthur Foundation, Chicago, IL, and the Commonwealth Fund, New York, NY.
Address Correspondence and Reprint Requests to: Martha S. Gerrity, MD, PhD, Portland VAMC, P3MED, 3710 S.W. U.S. Veterans Hospital Road, PO Box 1034, Portland, OR 97207. E-mail: [email protected]
Received May 16, 2000; initial review July 24, 2000; accepted March 12, 2001.