March 2009 references and further reading
Mitral valve prolapse
National Library of Medicine. Mitral valve prolapse resource page.
National Heart, Lung, and Blood Institute. Mitral valve prolapse.
Foods out of balance
Wells HF, Buzby JC. Dietary Assessment of Major Trends in U.S. Food Consumption, 1970-2005. USDA Economic Research Service: Washington DC, 2008.