sentences:  From 2000 to 2003, Attaran held a junior academic position at Harvard University in the Kennedy School of Government, where his research focus was on public health law and policy.At Harvard he co-directed the WHO Commission on Macroeconomics and Health in the Center for International Development under Jeffrey Sachs, and researched the influence of patent law on the ability of patients to access life-saving medicines and the human right to health at the Carr Center for Human Rights Policy under Michael Ignatieff.From 2003 to 2005, Attaran taught at Yale University in the School of Public Health, and was a fellow at Chatham House (formerly the Royal Institute of International Affairs) in London, where he researched global development, patent law, and access to essential medicines for neglected diseases such as malaria.