aldosterone , sodium , and potassium excretion in the urine of six newborns ( 5 , 6 , and 9 days ) , seven infants ( 2 , 3 , 4 , and 6 months ) and eight children ( 4 , 5 , 6 , 12 , and 15 years ) was determined at 3-hour intervals during a 24-hour period via gas chromatography and/or flame photometry .
C0021270
infants
C0008059
children