Paw Paw

I am interested in the North American paw paw. Recently, I saw on the Internet discussion comparing the closely related tropical Graviola with the North American paw paw. I read where Graviola is considered 10 times more effective than Chemotherapy and the paw paw appears to be even more effective than Graviola. I live near the Great Smokey Mountains of East Tennessee and there is a paw paw patch near my home.