title: Abnormal factor IX during anticoagulant treatment.
mesh_terms: D000941:Antigens; D001780:Blood Coagulation Tests; D005164:Factor IX / Q000037:antagonists & inhibitors*; D005170:Factor X; D005260:Female; D006801:Humans; D008297:Male; D014813:Vitamin K Deficiency / Q000097:blood*
chemical_list: D000941:Antigens; D005164:Factor IX; D005170:Factor X