Rapid screening test for primary hyperaldosteronism: ratio of plasma aldosterone to renin concentration determined by fully automated chemiluminescence immunoassays - Perschel, F H; Schemer, R; Seiler, L; Reincke, M; Deinum, J; Maser-Gluth, C; Mechelhoff, D; Tauber, R; Diederich, S (Clin Chem, 2004)