I can't help but be suspicious of this.  I looked at the web
page.  Then I searched for "intra-tumor therapy cancer
hydrogen peroxide" and the same with "acetic acid" -
two therapies purportedly pioneered by "Dr. John".

There were zero hits on hydrogen peroxide used as an
intra-tumor therapy (i.e., a therapeutic agent injected into
the tumor) and only one on acetic acid.  In that one, the
researcher talked about how acetic acid injected into a
liver cancer would damage the liver in mice.

I also saw that "Dr. John" claims to be preventing and
healing AIDS.  The quack meter was running dangerously
close to redline before I read that, but it went off the scale
with that claim.

   Alan