1. University of Missouri, Columbia, MO, USA
2. University of Nebraska Medical Center, Omaha, NE, USA
3. The Ohio State University, Columbus, OH, USA
4. Case Western Reserve University, Cleveland, OH, USA
5. South Dakota State University, Brookings, SD, USA
6. University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
7. University of Michigan, Ann Arbor, MI, USA
8. University of San Diego, San Diego, CA, USA
9. University of Kansas Medical Center, Kansas City, KS, USA