Association between deployment and Gulf War Illness and adverse COVID outcomes in a nationwide cohort of 1990–1991 Gulf Era war veterans in the VA’s Million Veteran Program - Donna L. White; Alice B. S. NonoDjotsa; Sarah T. Ahmed; Stephen H. Boyle; J. Michael Gaziano; Andrew D. Thompson; Melissa G. Johnson; Elizabeth J. Gifford; Renato Polimanti; Mihaela Aslan; Elizabeth R. Hauser; Drew A. Helmer (PLoS ONE, 2026)