I love this thread....."The Battle of the Experts"
Of course, none of you are "experts", but you are all, certainly, experienced, and while you are debating, I'm learning. Thanks.
Cherie, you were trivializing, on Chris's (who is also a nurse) behalf, and Rex, you did over-react by bombarding us with the worse case of an AVM. I did appreciate the films, Rex.
My conclusion...You were both wrong and you were both right, and I learned much, from both of you. Just try to remember, not to take these debates personally.
Debating can sometimes appear as personal attacks, but it is not, rather it is the argument/attack of an Idea, not the person.