Cynthia Comacchio, professor of history, Wilfrid Laurier University, is the author of 'Nations Are Built of Babies': Saving Ontario’s Mothers and Children, 1900-40, The Infinite Bonds of Family: Domesticity in Canada, 1850-1940, and The Dominion of Youth: Adolescence and the Making of Modern Canada, 1920-50.Janet Golden is professor of history, Rutgers University, and the author of several books including Message in a Bottle: The Making of Fetal Alcohol Syndrome.George Weisz is Cotton-Hannah Professor of the History of Medicine, McGill University and the author of several books, including Divide and Conquer: A Comparative History of Medical Specialization.