I guess I with MD Diana on this one - I can't recall anything like sterile conditions inside out of the elements on any calls I have been privy to. And, yes, I have seen physicians and ER personnel perform quite well. I think your point could be better stated as "physicians will be able to do more in a hospital or standard medical setting than they can do in the wild." And yes, some will do better and be more effective and comfortable than others. If I am ever the victim I will be perfectly happy to receive medical treatment from an MD in the field.

I can recall at least one instance where an onscene physician made the difference and saved a life. Everyone there, including a couple of paramedics, agreed.