[1] Baltimore VA Med Ctr, Baltimore, MD USA
[2] VA Maryland Hlth Care Syst, Baltimore, MD USA
[3] VA New Jersey Hlth Care Syst, War Related Illness & Injury Study Ctr, E Orange, NJ USA
[4] Rutgers State Univ, New Brunswick, NJ USA
[5] Univ Maryland, Sch Med, Baltimore, MD USA
[6] San Francisco VA Med Ctr, San Francisco, CA USA
[7] Rocky Mt VA Med Ctr, Aurora, CO USA
[8] Ann Arbor VA Med Ctr, Ann Arbor, MI USA
[9] Nashville VA Med Ctr, Nashville, TN USA
[10] VA NJ Hlth Care Syst, War Related Illness & Injury Study Ctr, E Orange, NJ USA