Li, I had the surgery for HCM at Mayo in Rochester in late 2011 and am doing great. The thing about Mayo is it is patient centric, meaning everyone knows everything about your case. I don’t know how you do the tests and suggest you call them. For me, they repeated the tests I had done in another state in the US because they trust their own results. But, I can tell you this. They know what they are doing. And you want to be somewhere that does these surgeries frequently, knowing how to fix any complications. Best wishes.