Double-blind, placebo-controlled study on the effect of the aldosterone receptor antagonist spironolactone in patients who have persistent proteinuria and are on long-term angiotensin-converting enzyme inhibitor therapy, with or without an angiotensin II receptor blocker - Chrysostomou, A; Pedagogos, E; MacGregor, L; Becker, G J (Clin J Am Soc Nephrol, 2006)