http://www.oddee.com/item_98828.aspx
http://www.3rank.com/10-people-who-have-extra-body-parts/
http://health.howstuffworks.com/human-body/parts/13-people-with-extra-body-parts.htm#page=10
http://carlifrenneman.hubpages.com/hub/8-People-With-Extra-Body-Parts
http://pictovista.blogspot.com.au/2011/11/7-craziest-humans-extra-body-parts.html