Bibliography
www.dictionary.com
http://www.betterhealth.vic.gov.au/bhcv2/bhcarticles.nsf/pages/Cholesterol_explained
http://www.mydr.com.au/default.asp?article=4330
www.heartfoundation.org.au
www.heartdisease.about.com/cs/balvulardisease/a/valvhd.htm