02-10-2009, 05:24 PM
David Gratzer - He is a practicing psychiatrist in Toronto and senior fellow at the Manhattan Institute[1], and as advisor to Rudy Giuliani in his 2008 presidential campaign he was the source for a disputed statistic that led to much criticism of Giuliani by foreign politicians, and the media in the U.S. and Europe. Medical experts have criticized Gratzer for drawing improper inferences from statistics.