<http://schema.org/description>
"Heart valves can be associated with murmurs due to endocardiosis, endocarditis, valvular stenosis or dysplasia. Dogs with heart murmurs may show no signs;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.petwave.com/Dogs/Health/Heart-Murmurs.aspx>