For those researching this option, the doctor who invented cryoablation is Dr. Gary Onik (with a K) and is at the center Ken mentions. He has worked on the cryotherapy procedure for over 25 years. He received high remarks at the 2004 ASCO meeting in Scottsdale Arizona. Ziggy can correct me if I am wrong, Dr. Al Barqawi received a grant for the study of TFT, a different procedure than total Cryoablation, and is the only center in that grant for this study. While other Cryosurgeons do perform this procedure without total ablation, there is no study that has results over ten years. Cryo Centers often do other treatments, as in the center below, and they all outline the Pro's and Con's of this procedure (this applies to total Ablation). Note that this center does perform Cryosurgery also.
In the following link, guidelines for this treatment option are talked about, and also critiqued. The authors are world reknowned prostate cancer specialists including David Crawford from the University of Colorado Hospitals ~ and Dirctor of the prostate cancer program there. Dr. Barqawi is a surgeon in that center.
Please also note, Cryoablation is surgery. And as in all surgery options it can have side effects. While cryoablation is touting less side effects, many men have to have repeat procedures done, or will have to take on additional therapies similar to other treatment options, that will compound the side effects in the same manner.