The United Nations' International children's emergency fund undertakes one of the greatest medical and welfare campaigns in history. All over the world, doctors carry on a large-scale fight against disease and malnutrition-a 20th century children's crusade. United Nations Headquarters. CUS - Pakistan. CUS - Israel. CUS - United States. MCUS - Hospital. MCUS - Nurses in classroom. MCUS - Doctor checking out a child. MCUS - Doctor checking out children. CUS - Nurse handing out food. MCUS - Men carrying medical supplies in a third world country.