studies were undertaken in man to evaluate the roles of volume depletion and of the parathyroid glands in mediating the changes in serum and urinary calcium which follow the administration of hydrochlorothiazide , 100 mg twice daily , for 4 days , 42 studies were carried out in 16 normal subjects , 9 patients with hyperparathyroidism , and 7 vitamin d-treated subjects with hypoparathyroidism .
C0030518
parathyroid glands
C0020626
hypoparathyroidism