--subdivision Ultrasonic imaging under individual diseases and types of diseases and individual organs and regions of the body other than brain and heart, e.g. Cancer--Ultrasonic imaging; Foot--Ultrasonic imaging
--subdivision Examination under individual organs and regions of the body, e.g. Heart--Examination; Foot--Examination; and subdivision Medical examinations under topical headings, classes of persons, ethnic groups, and individual military services
--headings beginning with the word Drug; also individual drugs and groups of drugs, e.g. Narcotics; also subdivision Therapeutic use under individual chemicals and groups of chemicals, e.g. Copper--Therapeutic use; Insulin--Therapeutic use; and subdivision Drug use under names of individual persons and under classes of persons and ethnic groups