High-risk populations: introduction.
Howard
George
G
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
Sacco
Ralph L
RL
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