[1] Northwestern University Medical School,Received from the Department of Medicine
[2] Loyola University,the Stricht School of Medicine
[3] Hines VA Hospital,the Midwest Center for Health Services Research and Policy
[4] the Brain Rehabilitation Research Center,the Department of Medicine
[5] Malcolm Randall VA Medical Center,the Department of Medicine
[6] VA Greater Los Angeles Healthcare System and the UCLA School of Medicine,the Department of Medicine
[7] SUNY Health Science Center at Brooklyn,the Division of Infectious Diseases
[8] Cook County Hospital and Rush Medical College,undefined
[9] University of Miami School of Medicine,undefined
[10] VA Chicago Health Care System-Lakeside Division,undefined