- Johns Hopkins University Baltimore, MD
- Duke University Durham, NC
- Georgia Institute of Technology Atlanta, GA
- University of California--San Diego La Jolla, CA
- Massachusetts Institute of Technology Cambridge, MA
- University of Pennsylvania Philadelphia, PA
- University of Washington Seattle, WA
- Boston University Boston, MA
- Case Western Reserve University Cleveland, OH
- Rice University Houston, TX
- University of Michigan--Ann Arbor Ann Arbor, MI
- Northwestern University Evanston, IL
- Stanford University Stanford, CA
- University of California--Berkeley Berkeley, CA
- Vanderbilt University Nashville, TN
- University of Wisconsin--Madison Madison, WI
- Washington University in St. Louis St. Louis, MO
- University of Virginia Charlottesville, VA
- University of Texas--Austin Austin, TX
- Cornell University Ithaca, NY
- University of Illinois--Urbana-Champaign Champaign, IL
- University of Minnesota--Twin Cities Minneapolis, MN
- University of Pittsburgh Pittsburgh, PA
- University of Utah Salt Lake City, UT
feb 10 2011 ∞
jan 28 2012 +
