Institution
- University of Iowa2
- University of Kansas. Medical Center1
- University of Leeds1
- University of Liverpool1
- University of London1
- University of Maryland at Baltimore. School of Medicine1
- University of Maryland, College Park1
- University of Massachusetts1
- University of Massachusetts Medical Center/Worcester2
- University of Massachusetts Medical School1
- University of Melbourne1
- University of Miami. School of Medicine1
- University of Michigan17
- University of Michigan. Medical Center1
- University of Michigan. Medical School2
- University of Michigan. University Hospital2
- University of Minnesota5
- University of Nebraska--Lincoln1
- University of New South Wales2
- University of North Carolina at Chapel Hill6