title: Thrombosis and factor-IX concentrates.
mesh_terms: D005164:Factor IX / Q000009:adverse effects*; D002836:Hemophilia B / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology*; D013924:Thrombophlebitis / Q000209:etiology*
chemical_list: D005164:Factor IX