Personal Correspondence 1:
Edward’s range is about fifteen to mid-twenties. He has been to medical school twice (helping Carlisle keep current), but he’s never tried to practice. He can’t handle blood the way Carlisle can.
So, if he's trying to help Carlisle keep current, he must be in a very advanced medical field, and he probably needs to go into some sort of practice.
Also, I noticed that 'correspondence' is spelled wrong on the Personal "CorrespondAnce" page. Haha, that's completely off topic; I'm a grammar freak. XD
I always picture Edward blond (so Rob doesn't fit in there). I have absolutely no idea why... Heh.
ETA: You can find it PC1 here: http://www.twilightlexiconblog.com/?p=34