Depends on where you are in your life right now, and how old you are, and are you willing/able to withstand the rigors of med school, internship, and a residency. I think that will all take what about 6-8 years.
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Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming ...."WOW! What a ride!!!!!"
LUNCH with THEOLDMAN...On a break for now...