This post was written in 2007, though surely the author would have updated information and opinions.
I found it interesting that the poster of the response, Finh, would mention that they treat for donations...which is how Zdenko's clinic operates, I believe.
In earlier Googling I found the clinic's telephone number, and the name of the man who books appointments (?)...but I wondered if English is spoken.
Perhaps Finh would tell how they became certified.