1. Cancer Biomarkers Working Group, Mohamed Ist University, Oujda, Morocco
2. Faculty of Medicine and Pharmacy, Mohamed Ist University, Oujda, Morocco
3. Department of Visceral Surgery, Mohamed VI University Hospital, Oujda, Morocco
4. Department of Haematology and Oncology, European Institute of Oncology, IEO, IRCCS, University of Milano, Milan, Italy
5. Department of Gastroenterology and Digestive Endoscopy, Mohamed V Military Teaching Hospital of Rabat, Mohamed V University, Rabat, Morocco
6. Montreal Neurological Institute and Hospital, McGill University, Montreal, Canada
7. Department of Pathology, National Institute of Oncology, Faculty of Medicine and Pharmacy, Mohamed V University, Rabat, Morocco
8. Department of Medical Oncology, Mohamed VI University Hospital, Oujda, Morocco
9. Department of Microbiology, Mohamed VI University Hospital, Oujda, Morocco