<https://www.hoag.org/specialties-services/heart-vascular/conditions/aortic-valve-disease/#webpage>
<http://schema.org/description>
"One of the many heart valve specialties at the Hoag Heart Valve Center is aortic valve disease, which has two forms, aortic regurgitation and aortic stenosis."
<https://www.hoag.org/specialties-services/heart-vascular/conditions/aortic-valve-disease/>