My wife is a phlebotomist and trauma nurse with the NHS NortEast trust, and can say without exception that when JW's say that they have had a hand in pushing bloodless medicine in mainstream treatment is utter bollocks.
The only reason that bloodless treatments are available is because of the huge lack of blood donors. These treatments were originaly developed for ease of use and transportation in the battlefield. The NHS found that they could also be used to shore up stocks of blood by using them in less severe cases, and also save money because of huge costs involved with live blood.
In her opinion, the JWs just jumped at the chance to use them (que the "wot a wonderful provision from jah"bollocks) as it meant they would be sued less.
As an aside, please please please, if you have never donated blood before for whatever reason, please reconsider. It is the best single humanitarian act you can do. If you have a rare blood group, even better. The blood can be made into life saving drugs as well as for transfusion. You could end up saving not just one life, but hundreds.
GA