Perez-Olmedo, J.C. et al. 2021. Peritoneal oxygen / ozone insufflation (IPO3). Total remission of asthenia and pain in one terminal oncological patient after IPO3 cycle. Journal of Ozone Therapy. 5, 6 (Dec. 2021), 1–8. DOI:https://doi.org/10.7203/jo3t.5.6.2021.14170.