- Response of aldosterone and 18-hydroxycorticosterone to angiotensin II in normal subjects and patients with essential hypertension, Conn's syndrome, and nontumorous hyperaldosteronism. Fraser, R., Beretta-Piccoli, C., Brown, J.J., Cumming, A.M., Lever, A.F., Mason, P.A., Morton, J.J., Robertson, J.I. Hypertension (1981)