1. Department of EpidemiologyFaculty of Medicine and Pharmacy Fez Morocco
2. IFSTTAR, UMRESTTEUCBL, University of Lyon Lyon France
3. Nutrition and Metabolism SectionInternational Agency for Research on Cancer Lyon France
4. Department of Research and DevelopmentHassan II University Hospital of Fez Fez Morocco
5. Department of OncologyHassan II University Hospital of Fez Fez Morocco
6. Department of Public HealthMohammed VI University of Health Sciences Casablanca Morocco
7. Department of Community Health and Social MedicineCity University of New York New York New York