Has anyone tried ozone therapy for cancer treatment?

I'm looking for somebody out there that might have information on 03 treatments or ozone to battle cancers tumors HIV and AIDS I have a friend that has used his 03 machine on his girlfriend and has removed three tumors from her stomach within weeks he also has some research showing that it positively attacks 90% sales high in iron which usually are cancer cells so instead of killing every cell it only kills cancer cells which is better than chemo cuz chemo kills every cell and hopefully they get the cancer cells anyway just wondering if there's any more information out there on this treatment as from what my friend told me it was very positive but he has since passed from a heart attack and I would like to look into more information about 03 treatments and how to administer or if there's any more research on the treatment I know for sure it helps with HIV and AIDS but not really sure how it works on cancers I know in the molecular structures of it 03 breaks down into '02 and win that third molecule detaches it usually attacks cells high in iron which 90% of the time are cancer cells so it seems suitable just not really sure how to administer any information would be very appreciated thank you hope everybody's doing okay with their treatments maybe this might be a new one who knows if I don't disappear after posting this information