1. Division of Cancer Epidemiology, Department of Oncology; McGill University; Montreal Quebec Canada
2. Faculty of Medicine; Memorial University; St. John's, Newfoundland and Labrador Canada
3. Public Health Laboratory; St. John's, Newfoundland and Labrador Canada
4. Department of Obstetrics and Gynaecology; University of Kinshasa; Kinshasa Democratic Republic of Congo
5. Laboratory of Medical Investigation 14, Faculty of Medicine; University of Sao Paulo; FMUSP Sao Paulo Brazil
6. Life and Health Sciences Research Institute, School of Health Sciences; University of Minho; Braga Portugal
7. Life and Health Sciences Research Institute/3B's-PT Government Associate Laboratory; Braga/Guimaraes Portugal
8. Molecular Oncology Research Center; Barretos Cancer Hospital; Barretos Sao Paulo Brazil
9. Department of Nutrition, School of Public Health; University of Sao Paulo; Sao Paulo Brazil
10. Department of Microbiology and Infectious Diseases; Montreal University Medical Center; Montreal Quebec Canada