[1] St Louis Univ, Med Ctr, Dept Vet Affairs, St Louis, MO 63110 USA
[2] Dept Vet Affairs, Cooperat Studies Program, Albuquerque, NM USA
[3] Dept Vet Affairs, Cooperat Studies Program, West Haven, CT USA
[4] Med Ctr, Dept Vet Affairs, Durham, NC USA
[5] MedImmune Vaccines Inc, Mountain View, CA USA
[6] Med Ctr, Dept Vet Affairs, Ann Arbor, MI USA
[7] Med Ctr, Dept Vet Affairs, Minneapolis, MN USA
[8] Med Ctr, Dept Vet Affairs, Birmingham, AL USA
[9] Med Ctr, Dept Vet Affairs, Richmond, VA USA
[10] Med Ctr, Dept Vet Affairs, Gainesville, FL USA
[11] Med Ctr, Dept Vet Affairs, Chicago, IL USA
[12] Med Ctr, Dept Vet Affairs, Salt Lake City, UT USA
[13] Dept Vet Affairs, Palo Alto, CA USA
[14] Med Ctr, Dept Vet Affairs, Boston, MA USA
[15] VA Puget Sound Hlth Care Syst, Seattle, WA USA
[16] Stat Collaborat, Washington, DC USA