A more interesting comparison if you're going to use medicine, IMO, is how it's the exact opposite for surgeons compared to doctors. If you believe The Wisdom of Psychopaths: What Saints, Spies, and Serial Killers Can Teach Us About Success by Kevin Dutton (which is the basis of this HuffPo article):

http://www.huffingtonpost.com/eric-barker/which-professions-...

It makes sense because doctors require a high level of empathy whereas surgeons need to be better under pressure, be able to hold longer focus, etc. which are qualities of psychopaths.