Institution
- University of Cambridge2
- University of Cape Town1
- University of Chicago1
- University of Florida1
- University of Illinois at Urbana-Champaign2
- University of Kent at Canterbury1
- University of Leeds1
- University of Maryland, College Park1
- University of Melbourne1
- University of Michigan2
- University of Minnesota1
- University of Nebraska--Lincoln1
- University of Notre Dame1
- University of Oxford2
- University of Pennsylvania1
- University of Pennsylvania. School of Medicine1
- University of Pittsburgh3
- University of Pittsburgh. Medical Center1
- University of Pittsburgh. School of Law1
- University of Southern California1