The National Heart Institute Twin Study.
D000328:Adult; D000886:Anthropometry; D004813:Epidemiology; D005260:Female; D006331:Heart Diseases / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009316:National Institutes of Health (U.S.); D011247:Pregnancy; D014427:Twins; D014481:United States