NEW YORK (Reuters Health) - Gulf War veterans exposed to chemical munitions at Khamisiyah, Iraq are nearly twice as likely as their unexposed peers from the same war to die from brain cancer, according to a report in the American Journal of Public Health. "We found an approximately twofold excess of brain cancer deaths, 12 to 13 excess deaths in a population of 100,000 veterans, associated with possible exposure to chemical warfare agents," Tim A. Bullman, from the Department of Veteran Affairs in Washington, DC, and colleagues report. In the new study, rates of death from specific causes for 100,487...