title: Factor VIII and factor IX concentrates in surgery in hemophilia.
mesh_terms: D005164:Factor IX / Q000627:therapeutic use*; D005169:Factor VIII / Q000627:therapeutic use*; D006467:Hemophilia A / Q000150:complications*; D006801:Humans; D013514:Surgical Procedures, Operative
chemical_list: D005169:Factor VIII; D005164:Factor IX