Albert NM, Yancy CW, Liang L, et al.

JAMA 2009;302:1658-1665.

http://jama.ama-assn.org/cgi/content/short/302/15/1658

Among heart failure patients eligible for aldosterone antagonist therapy, less than one-third received the therapy. Among 12,565 patients, only 4087 (32.5%) received the therapy.