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Place
- California--Fullerton36
- New York (State)--New York20
- Pennsylvania--Philadelphia20
- United States13
- California--Brea6
- New York (State)--Rochester6
- Michigan--Midland4
- Kenya--Nairobi3
- New Jersey3
- University of Pennsylvania3
- University of Wisconsin--Madison3
- Austria--Vienna2
- California--Berkeley2
- California--Palo Alto2
- China--Beijing2
- Colombia--Cartagena2
- Eidgenössische Technische Hochschule Zürich2
- England--Barlaston2
- England--Stoke-on-Trent2
- Illinois--Chicago2