Heart disease in Doberman - helpful websites

http://pets.webmd.com/dogs/congestive-heart-failure-dogs

http://www.petmd.com/dog/slideshows/general_health/top-ten-signs-of-heart-disease-in-dogs#.UfJ0EhY-03g

http://www.2ndchance.info/dogdilcardiomyopathy.htm