First of all, I am not an expert in this field. I am a stage 4 lung cancer patient, and have done some research regarding cancer treatments.
My advice: you are wasting your time and money. It looks fancy, but effectless and suffering.
Here are:
Good
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4971045/
http://www.prweb.com/releases/2011/9/prweb8805061.htm
Bad
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487135/
And Ugly
https://thetruthaboutcancer.com/hyperbaric-oxygen-therapy/
看完这些,还想做,去德国吧