the urinary excretion of calcium , oxalate , citrate and magnesium , and the relative saturation products in urine of either calcium oxalate or calcium phosphate , were determined in male duodenal ulcer ( du ) patients preoperatively ( n = 60 ) , and 1 and 5 years following highly selective vagotomy ( hsv ) , and in male healthy controls ( n = 30 ) .
C0006675
calcium
C0006711
calcium