--subdivision Medical care under names of individual military services and under individual wars, classes of persons, ethnic groups, and occupational groups, e.g. United States. Air Force--Medical care; World War, 1939-1945--Medical care; Aged--Medical care; Afro-Americans--Medical care; Construction industry--Employees--Medical care
--subdivisions Patients--Social conditions and Social aspects under individual diseases, e.g. Cancer--Patients--Social conditions; Cancer--Social aspects; and subdivision Social aspects under medical topics, e.g. Heart--Transplantation--Social aspects