title: Letter: Hereditary angioedema and heparin therapy.
mesh_terms: D000799:Angioedema / Q000188:drug therapy / Q000235:genetics*; D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D007610:Kallikreins / Q000037:antagonists & inhibitors
chemical_list: D006493:Heparin; D007610:Kallikreins