[Four cases with congenital factor XII (Hageman factor) deficiency (author's transl)].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002675:Child, Preschool; D005175:Factor XII Deficiency / Q000151:congenital* / Q000235:genetics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged