1,000
Participants
Start Date
January 31, 2000
VA Pittsburgh Health Care System, Pittsburgh
Durham VA Medical Center, Durham
Louisville VAMC, Louisville
Madison VA Medical Center, Madison
Little Rock VAMC, Little Rock
Salt Lake City VA Medical Center, Salt Lake City
VA Palo Alto Health Care System, Palo Alto
White River Junction VAMC, White River Junction
US Department of Veterans Affairs
FED