title: Letter: Withdrawal of antihypertensive therapy.
mesh_terms: D001794:Blood Pressure / Q000187:drug effects; D003000:Clonidine / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans; D006973:Hypertension / Q000188:drug therapy* / Q000209:etiology; D010646:Phentolamine / Q000494:pharmacology / Q000627:therapeutic use; D011433:Propranolol / Q000494:pharmacology / Q000627:therapeutic use
chemical_list: D011433:Propranolol; D003000:Clonidine; D010646:Phentolamine