It’s hopefully an alternative to paying a company like Orca $200/mo. (It used to be $5000 annually, sold solely on the value of potential losses saved.) https://orcainventory.com/
My mother had immunotherapy treatment last year for lung cancer. It caused a lethal arrhythmia within 24 hours that they could not treat. She was dead by the end of that day. The cardiologist said this was a known side effect (he muttered 5% as she lay there). It's still not a perfect solution.