Center for Global Development data sets: Cross-Country Data on AIDS Treatment and HIV Prevalence in 2006-07, Owen McCarthy and Mead Over. The Fate of Young Democracies. Net Aid Transfers data set (1960-2007), David Roodman. New Data on African Health Professionals Abroad, Michael Clemens. Anarchy of Numbers data set, David Roodman. Aid, Policies, and Growth data set, William Easterly, Ross Levine and David Roodman.