1. University of Toronto, St Michael's Hospital, Toronto, ON;
2. Harvard Vanguard Medical Associates, Beverly, MA;
3. Washington University, St Louis, MO;
4. Medical Specialists of Taunton, Taunton, MA;
5. University of Toronto, University Health Network, Toronto, ON;
6. University of North Carolina, Chapel Hill, NC;
7. Baylor College of Medicine, Houston, TX;
8. Nationwide Children's Hospital, Columbus, OH;
9. Medical College of Wisconsin, Milwaukee, WI;
10. UT Southwestern Medical Center, Dallas, TX;
11. Mayo Clinic, Jacksonville, FL;
12. Adam Haynes Consulting, Hamilton, ON; and
13. McMaster University, Hamilton, ON