This is a link to the article written by Dr. Enriquez-Sarano. I certainly wish that this information was available at the time I was diagnosed. I would have gone to the Clev. Clinic earlier and been evaluated.
http://heart.bmjjournals.com/cgi/reprint/87/1/79
http://heart.bmjjournals.com/cgi/reprint/87/1/79