1. Holland Bloorview Kids Rehabilitation Hospital, Toronto, Canada
2. University of Manitoba, Division of Orthodontics, Winnipeg, Canada
3. University of Seton Hill, Department of Orthodontics, Greensboro, Pennsylvania
4. Orthodontist, Children's Aid Society of Toronto, Toronto, Canada; and in Private Practice, Toronto, Ontario, Canada.
5. Department of Preventive Dental Sciences and Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada.
6. Division of Orthodontics, University of Manitoba, Winnipeg, Manitoba, Canada.
7. Division of Orthodontics, University of Manitoba, Winnipeg, Canada.
8. Department of Preventive Dental Science, University of Manitoba, Winnipeg, Manitoba, Canada.