LONDON -- A survey of deaths in Iraqi households estimates that as many as 100,000 more people may have died throughout the country in the 18 months after the U.S. invasion than would be expected based on the death rate before the war. There is no official figure for the number of Iraqis killed since the conflict began, but some non-governmental estimates range from 10,000 to 30,000. As of Wednesday, 1,081 U.S. servicemen had been killed, according to the U.S. Defense Department. The scientists who wrote the report concede that the data they based their projections on were of "limited...