Purdue University
USA
Iowa State University
University of California, Davis
North Carolina State University
University of Illinois at Urbana-Champaign
Cornell University
University of Florida
Ohio State University
Texas A&M University
University of Nebraska - Lincoln
The Pennsylvania State University
University of Wisconsin - Madison
Virginia Polytechnic Institute and State University
Michigan State University
Kansas State University
Washington State University
University of Minnesota, Twin Cities
The University of Tennessee, Knoxville
Auburn University
University of Kentucky