Plasma Renin test-guided drug treatment algorithm for correcting patients with treated but uncontrolled hypertension: a randomized controlled trial - Egan, B M; Basile, J N; Rehman, S U; Davis, P B; Grob, C H, 3rd; Riehle, J F; Walters, C A; Lackland, D T; Merali, C; Sealey, J E; Laragh, J H (Am J Hypertens, 2009)