Affiliation: | (1) William S. Middleton Memorial Veterans Hospital, Departments of Neurology and Medicine, University of Wisconsin School of Medicine, Madison, Wisconsin, US;(2) Cooperative Studies Program Coordinating Center, VA Medical Center, Perry Point, Maryland, US;(3) Aurora Regional Medical Center, Aurora, Colorado, US;(4) VA Medical Center, Little Rock, Arkansas, US;(5) VA Medical Center, Long Beach, California, US;(6) Hines VA Hospital, Hines, Illinois, US;(7) VA Medical Center, Nashville, Tennessee, US;(8) VA Medical Center, Brockton/West Roxbury, Massachusetts, US;(9) VA Medical Center, North Chicago, Illinois, US;(10) VA Medical Center, Portland, Oregon, US;(11) VA Medical Center, Denver, Colorado, US;(12) Richard L. Roudebush Veterans Medical Center, Indianapolis, Indiana, US;(13) VA Medical Center, Reno, Nevada, US;(14) VA Puget Sound Health Care System, Seattle, Washington, USA, US |