Just FYI Dr. Hulda Clark says endometriosis is caused by parasites. (I am more and more coming to respect her opinions, personally.) I'm no expert but am guessing that if the oxygen works it is because parasites don't like it.
Endometriosis has absolutely nothing to do with parasites. It results from a hormone imbalance, which is why bitters and B vitamins help. These cleanse the liver so it can do a better job of breaking down the excess estrogen.
Ozone can also destroy excess estrogen through oxidative destruction.
By the way, parasitical cancers are extremely rare. And parasites do not cause diabetes or AIDS either as she claims.