I always remember it because "vivo" has 4 letters in it, and so does the word "body". So, in vivo is in the body. Vitro is that other thing, doing something in the lab. Lotsof terminology over my head in the article but agree its always good to give the body the minerals it might be lacking.
WF Koch taught that a microbe is part of the cancer equation 80 years ago, also found by many others. The info is out there, just have to look a little harder to find it.
What is consistent is proven by Chochoua's work, that each of the anaerobes have a specific affinity for different bodily tissues. The anaerobe associated with cervix is different than the one associated with leukemia, osteosarcoma, adenocarcinoma, etc.
But in each case, there are remedies that function equally to disengage all of these from the host. Fascinating stuff.
Maybe I read it wrong, but didn't the NCBI study at the link you posted say it was in vivo ?