Okay, ILove. Sorry if I misunderstood. The issue was like you said, evidence.
Solid data and evidence is needed. Especially when public $$$ is being used.
What I find interesting about the OP is that this is yet another media piece that uses a Jehovah's Witness patient to promote and/or discuss medical technology. A patient who doesn't even have a medical blood disorder - they have a blood disorder that has been given to them. And that is the selling point - no blood. From a made up blood disorder.