There is ongoing research. I participated in some research for Dr. Z while I was out there in CA last week. The problem is, getting all of the Dr's. educated when there is new information out there. Let's compare it to something else. I see it like this. I am a barber and I could cut hair the same way for the rest of my life, or wrap perms the same way for the rest of my life, and think that this it is the best and only way to do it, and be so set in my ways that I would not try something new, even if it has been proven to be better. I could still be doing haircuts all by hand, no clippers involved. It would only be stupidity on my part, but it has been tried and proven, so why change, right? I can cut hair either way, but one way is so much faster and easier!
I see Dr's like this! They have learned it one way in school, so when new things come along, why change your thinking on it? Why try something new? You think the old way is the best way, or at least good enough! It is a good thing for us that some Dr's. believe in trying new ways!
Gracie