1. University of Alabama at Birmingham, Birmingham, Alabama
2. Loyola University, Maywood, Illinois
3. New England Research Institutes, Watertown, Massachusetts
4. University of Iowa, Iowa City, Iowa
5. University of Texas Health Science Center at San Antonio, San Antonio
6. University of California at San Diego, San Diego, California
7. University of Maryland, Baltimore, Maryland
8. University of Texas Southwestern, Dallas, Texas
9. William Beaumont Hospital, Royal Oak, Michigan