Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts. Harvard Medical School, Boston, Massachusetts. Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts. British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow, Scotland. Minneapolis VA Center for Care Delivery and Outcomes Research, University of Minnesota, Minneapolis. University of Utah School of Medicine, Salt Lake City. Erasmus MC, Cardiovascular Institute, Thorax Center, Department of Cardiology, Rotterdam, the Netherlands. Duke University Medical Center, Durham, North Carolina. Yale School of Medicine, New Haven, Connecticut. Saint Luke's Mid America Heart Institute, University of Missouri, Kansas City. National Heart Center Singapore and Duke-National University of Singapore, Singapore. National University of Cordoba, Cordoba, Argentina. Cardiovascular Division, Instituto de Pesquisa Clínica de Campinas, Campinas, Brazil. Northwestern University Feinberg School of Medicine, Chicago, Illinois. University of Toronto, Toronto, Ontario, Canada. Late-Stage Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals Research and Development, AstraZeneca, Gothenburg, Sweden.