If the doctors are board certified urologists then their credentials are legitimate.
This does not mean their success rate claims are legit.
You can ask them the following
Can you see the data they are using
What hospital are they associated with [then call the hospital and ask for verification of their legitimacy].
It is also important to ask them about ED from what cause.
Some causes are highly curable. Some are not.
Cure is a rather incorrect term, because one can remedy erectile dysfunction, but not necessarily cure the underlying problem.
OK, so that is an initial answer….
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