1. University of California, San Diego, California
2. Loyola University Medical Center, Maywood, Illinois
3. University of Texas Health Sciences Center, San Antonio, Texas
4. University of Maryland, Baltimore, Maryland
5. Magee Women’s Hospital, University of Pittsburgh, Pittsburgh, Pennsylvania
6. Beaumont Hospital Medical Center, Royal Oak, Michigan
7. University of Texas Southwestern, Dallas, Texas
8. University of Alabama at Birmingham, Birmingham, Alabama
9. New England Research Institutes, Watertown, Massachusetts
10. University of Utah Health Sciences Center, Salt Lake City, Utah
11. The University of Virginia Health Systems, Charlottesville, Virginia