interrelationship between serum na+ , k+ concentrations and the excretion of norepinephrine ( na ) , epinephrine ( a ) in the urine was studied in 69 patients aged 15-69 with pheochromocytoma ( ph ) , and between serum na+ , k+ concentrations and serum na , a levels in 53 patients .
C0028351
norepinephrine
C0014563
epinephrine