DISTRICT of Columbia Survey of Medical Care for the Indigent and Related Services.
D035843:Biomedical Research; D003625:Data Collection; D004219:District of Columbia; D006801:Humans; D011203:Poverty; D011634:Public Health; D012749:Sexually Transmitted Diseases / Q000517:prevention & control*; D014376:Tuberculosis / Q000517:prevention & control*; D014937:Work
PUBLIC HEALTH; TUBERCULOSIS/prevention and control; VENEREAL DISEASES/prevention and control