title: Severe congenital hypoprothrombinemia.
mesh_terms: D001777:Blood Coagulation; D002675:Child, Preschool; D005171:Factor X Deficiency / Q000097:blood / Q000151:congenital* / Q000175:diagnosis; D005260:Female; D006801:Humans; D007020:Hypoprothrombinemias / Q000151:congenital*; D011517:Prothrombin Time