The medical students have some medical exercises with physicians from around the world at Ann Myers Medical Center in Second Life. See some snapshots as examples at https://scienceroll.com/2007/08/09/live-blogging-today-first-medical-simulation-in-second-life/
Before practicing medicine on real patients, nursing students at Tacoma Community College, in Washington, get to practice on virtual ones in the world of Second Life. Visit the article “To Save a Second life” from The Wired Campus.