Townsend, R Effects of calcium channel blockade on calcium homeostasis in mild to moderate essential hypertension. [electronic resource] - The American journal of the medical sciences Sep 1990 - 133-7 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0002-9629 Standard No.: 10.1097/00000441-199009000-00001 doi Subjects--Topical Terms: AdultAgedBlood Pressure--drug effectsCalcium--metabolismCalcium Channel Blockers--pharmacologyCaptopril--pharmacologyDiltiazem--pharmacologyFemaleHomeostasis--drug effectsHumansHypertension--metabolismMaleMiddle AgedParathyroid Hormone--bloodRenin--blood