fifteen elderly ( mean age 69 ) subjects were studied during three 12-d experimental periods in which they were fed either a basal diet containing 16 mg zn or the basal diet supplemented either with 400 ml of milk or with dibasic calcium phosphate supplements containing an equivalent amount of calcium ( 468 mg ) and phosphorus ( 360 mg ) .
C0108134
dibasic calcium
C0006675
calcium