Do MSTPs (or other MD/PhDs) ever allow you to do your PhD at a different school than your MD? If so, how does this happen, and is it more ad hoc (like, you come into a program, change research interests, and now need to go to a different school to find an appropriate mentor) or formal (agreed upon even before coming in, etc)?
Any anecdotes would be helpful!
Any anecdotes would be helpful!