My undergrad is in Bio, and my Master's is in Public Health/Infectious Disease.
I am not sure about all the rotation sites, I only asked about the ones I was interested in. But, you do have elective rotation topics so you can find out what sites offer regional in that respect and go there.
When you interview you get a q&a session with the clinical director. I am more interested in cardio/thor surgery and neurology so I mainly talked about that.
You know, you can email all these questions to Emory and they will be more than happy o answer them. They can probably be more helpful than all the little tid bits I remember from the interview. The clinical q&a was right after the interview, so I was still a bit nervous and anxious about that while the clinical director was talking.