1. Department of Laboratory Medicine, Cleveland Clinic, Cleveland, Ohio, USA
2. Medical College of Wisconsin, Milwaukee, Wisconsin, USA
3. Children's Medical Center of Dallas, Dallas, Texas, USA
4. Scott & White Memorial Hospital, Temple, Texas, USA
5. Massachusetts General Hospital, Boston, Massachusetts, USA
6. Calgary Laboratory Services, Calgary, Alberta, Canada
7. Becton, Dickinson and Company (BD Diagnostics), Quebec, QC, Canada
8. Becton, Dickinson and Company (BD Diagnostics), Sparks, Maryland, USA
9. Cincinnati Children's Hospital, Cincinnati, Ohio, USA