title: Factor IX deficiency in liver disease.
mesh_terms: D000368:Aged; D005260:Female; D002836:Hemophilia B; D006801:Humans; D008107:Liver Diseases / Q000601:surgery*; D008297:Male; D008722:Methods; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control; D011517:Prothrombin Time