IDK, a friend had cancer, past tense. first time (5-6 yrs ago) he went surgery, radiation, chemo (cut, burn, poison) route. tumor gone but nasty side-effects of which he was not warned. cancer returned and he swore he would not listen to drs a second time. bought his own rife device, top of the line from a company in switzerland. used it religiously for a yr. we buried him this past july.
do not believe that the Rife device is a miracle cure all. i believe it is effective for a wide range of infectious agents, but against cancer, the Rife freq of the tumor is too close to the Rife freq of healthy tissue, ie, it's not going to work. it may destroy viruses that cause cancer, but if you already have cancer, it's a day late and a dollar short.
i DO think there ARE suppressed cancer cures, but that they chemical (herbal, mineral, etc).