in order to elucidate the main factors controlling plasma aldosterone in infancy and childhood , plasma renin activity ( pra ) , plasma cortisol ( pc , as a parameter of acth activity ) , plasma aldosterone ( pa ) and serum sodium and potassium were measured simultaneously in 84 healthy children ( 62 recumbent , 22 upright ) ranging in age from 6 days to 16 years .
C0231330
infancy
C0231335
childhood