Jehovah's witnesses are all fucked anyway. What did Jehovah do that he needed so many fucking witnesses for in the first place, and how come there are so many of them around if the bugger did it all those years ago?
Anyway, the Hippocratic Oath says 'do no harm to patients'. Where does it say in there that keeping a patient alive by blood transferring is doing harm?
Fuck the soul, doctors are there to save lives.