[Hemophilia B; two cases of hereditary hemophilia due to a deficiency of a new clotting factor (Christmas factor)].
D001777:Blood Coagulation; D003937:Diagnosis, Differential; D005164:Factor IX; D006467:Hemophilia A / Q000175:diagnosis*; D002836:Hemophilia B; D006474:Hemorrhagic Disorders; D006801:Humans
D005164:Factor IX
BLOOD COAGULATION; HEMOPHILIA/differential diagnosis; HEMORRHAGIC DIATHESIS