title: Severe factor XI deficient patient treated with oral anticoagulants.
mesh_terms: D000284:Administration, Oral; D000368:Aged; D000925:Anticoagulants / Q000008:administration & dosage*; D005173:Factor XI Deficiency / Q000188:drug therapy*; D006801:Humans; D008297:Male
chemical_list: D000925:Anticoagulants