[1] VA Bedford Healthcare Syst, 200 Springs Rd 152, Bedford, MA 01730 USA
[2] Univ Massachusetts Lowell, Dept Publ Hlth, 220 Pawtucket St, Lowell, MA 01854 USA
[3] VA Puget Sound Hlth Care Syst, 9600 Vet Dr SW, Tacoma, WA 98498 USA
[4] Univ Washington, Dept Hlth Serv, 1959 NE Pacific St, Seattle, WA 98195 USA
[5] Tuscaloosa VA Med Ctr, 3701 Loop Rd, Tuscaloosa, AL 35404 USA
[6] Univ Alabama, Dept Psychol, 745 Hackberry Ln, Tuscaloosa, AL 35401 USA
[7] Univ Alabama, Alabama Inst Aging, 745 Hackberry Ln, Tuscaloosa, AL 35487 USA