1. Cancer Control Research, BC Cancer Vancouver BC Canada
2. Cervical Cancer Screening Program, BC Cancer Vancouver BC Canada
3. BC Centre for Disease Control Vancouver BC Canada
4. Department of Obstetrics and GynecologyUniversity of British Columbia Vancouver BC Canada
5. School of Public HealthUniversity of British Columbia Vancouver BC Canada
6. Canadian Centre for Applied Research in Cancer Control, BC Cancer Vancouver BC Canada
7. Division of Cancer EpidemiologyMcGill University Montreal QC Canada
8. Women's Health Research Institute Vancouver BC Canada