- Chiba University, Chiba, Japan
- Clark Atlanta University, Atlanta, GA, USA
- DESY-Zeuthen, Zeuthen, Germany
- Imperial College, UK
- Institute for Advanced Study, Princeton, NJ, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Pennsylvania State University, State College, PA, USA
- South Pole Station, Antarctica
- Southern University and A & M College, Baton Rouge, LA, USA
- Stockholms Universitet, Stockholm, Sweden
- Universität Mainz, Mainz, Germany
- Universität Wuppertal, Wuppertal, Germany
- Université Libre de Bruxelles, Bruxelles, Belgium
- Université de Mons-Hainaut, Mons, Belgium
- University of Alabama, Tuscaloosa, AL
- University of California-Berkeley, Berkeley, CA, USA
- University of Canterbury, Christchurch, New Zealand
- University of Delaware, Newark, DE, USA
- University of Kansas, Lawrence, KS, USA
- University of Maryland, College Park, MD, USA
- University of Oxford, Oxford, UK
- University of Wisconsin-Madison, Madison, WI, USA
- University of Wisconsin-River Falls, River Falls, WI, USA
- Universidad Simon Bolivar, Caracas, Venezuela
- Uppsala Universitet, Uppsala, Sweden
- Universiteit Utrecht, Utrecht, Netherlands
- Vrije Universiteit Brussel, Brussels, Belgium
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