Tamar,

There is a clear difference between regulations and studies. Studies happen after a certain procedure has been coined for treatment of a certain issue and already have been applied to significant number of patients. In-vitro and animal trails are not very useful and double blind peer reviews neither. The regulations that are in place for FDA approval of drugs are (largely?) not applicable to these kind of procedures.



>Yeah, I guess with surgery, it's somewhat different. But Walter's message mentioned radiation. I know I hear about studies of various radiation treatments.
>
>Tamar