title: High-risk populations: introduction.
authors.affiliation: University of Alabama at Birmingham, Professor and Chair, Department of Biostatistics, Ryals Building, Room 327, 1665 University Blvd, Birmingham, AL 35294-0022, USA. ghoward@uab.edu
authors.forename: George
authors.initials: G
authors.lastname: Howard
authors.forename: Ralph L
authors.initials: RL
authors.lastname: Sacco
mesh_terms: D006801:Humans; D015994:Incidence; D055825:National Institute of Neurological Disorders and Stroke (U.S.); D044382:Population Groups / Q000706:statistics & numerical data*; D012307:Risk Factors; D020521:Stroke / Q000453:epidemiology* / Q000208:ethnology / Q000517:prevention & control*; D014481:United States / Q000453:epidemiology