title: Biographical factors associated with longevity in male Kansas pioneers.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001680:Biographies as Topic; D002648:Child; D002675:Child, Preschool; D005191:Family Characteristics; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007615:Kansas; D008136:Longevity; D008297:Male; D008393:Marriage; D008875:Middle Aged; D012959:Socioeconomic Factors