"By multiplying those rates by the annual Iraq population,
the authors estimate the total excess Iraqi deaths attributable to the war
through mid-2011 to be about 405,000. The researchers also estimated that an
additional 56,000 deaths were not counted due to migration. Including this
number, their final estimate is that approximately half a million people died
in Iraq as a result of the war and subsequent occupation from March 2003 to
June 2011."