The University of Alabama at Birmingham (UAB) is a public R1 research university in Birmingham, Alabama. Developed from an academic extension center established in 1936, the institution became a four-year campus in 1966 and a fully autonomous university in the University of Alabama System in 1969. UAB offers 140 programs of study in 12 academic divisions leading to bachelor's, master's, doctoral, and professional degrees in the social and behavioral sciences, the liberal arts, business, education, engineering, and health-related fields such as medicine, dentistry, optometry, nursing, and public health. In the fall of 2018, 21,923 students from more than 110 countries were enrolled. The UAB Health System, one of the largest academic medical centers in the United States, is affiliated with the university. UAB Hospital sponsors residency programs in medical specialties, including internal medicine, neurology, surgery, radiology, and anesthesiology. UAB Hospital is the only Level I trauma center in Alabama.