1. Division of Clinical Chemistry , Vancouver General Hospital , Vancouver , BC , Canada
2. Department of Pathology and Laboratory Medicine , University of British Columbia , Vancouver , BC , Canada
3. DynaLIFE Medical Labs , Edmonton , AB , Canada
4. Department of Laboratory Medicine and Pathology , University of Alberta , Edmonton , AB , Canada
5. Dynacare , Brampton , ON , Canada
6. Department of Laboratory Medicine and Pathobiology , University of Toronto , Toronto , ON , Canada
7. Laboratory Medicine Program, Division of Clinical Biochemistry , University Health Network , Toronto , ON , Canada