1. From the Baylor College of Medicine Houston TX
2. the University of Texas Medical Branch Galveston TX
3. and the University of Colorado School of Medicine/Children's Hospital Colorado Aurora CO
4. the University of Alabama at Birmingham Birmingham AL
5. the University of Louisville School of Medicine Louisville KY
6. the Perelman School of Medicine University of Pennsylvania Philadelphia PA
7. and the Children's Hospital Los Angeles/University of Southern California Los Angeles CA