--individual diseases, e.g. Cancer; and subdivision Diseases under individual organs and regions of the body, individual animals and groups of animals, classes of persons and ethnic groups, e.g. Heart--Diseases; Fishes--Diseases; Infants--Diseases; African Americans--Diseases
--individual diseases, e.g. Cancer; and subdivision Diseases under individual organs and regions of the body, individual animals and groups of animals, classes of persons and ethnic groups, e.g. Heart--Diseases; Fishes--Diseases; Infants--Diseases; African Americans--Diseases
Here are entered works on the systematic collection and evaluation of data on the incidence and distribution of diseases and injuries for the purpose of their prevention.