Hello
I have never heard of them personally. I am a huge proponent of the powers of natural therapies to treat cancer. I have read about this method of treatment and it does make sense to me. However, the fact that they gave you a 90% chance of success would make me skeptical. Not because i dont believe it is possible because people beat cancer everyday that were told otherwise. natural medicine and therapies are my passion and i am by no means an expert,but i dont believe that there is one magic treatment or herb that can cure...it seems to me that people beating it have found a proper combination of certain supplements, diet,etc....and hae brought their body back into a state of balance that can fend off the disease.
Alternative treatments such as this one can be very very expensive. If you at all doubt the sincerity of anything they said to you, go with your intuition and find another means of treatment or devise a plan to use in conjunction with it so you are not soley relying on that one treatment
I wish you the best of luck and i know you can find some way to heal yourself if you dont give up!