1. University Lyon, Claude Bernard University, Cancer Research Center of Lyon, INSERM U1052, CNRS UMR5286, Faculty of Pharmacy, F-69008, Lyon, France
2. Hospices Civils de Lyon, Molecular Biology of Tumors, GHE Hospital, F-69500, Bron, France
3. Hospices Civils de Lyon, Digestive Oncology, Hospital E Herriot, F-69432, Lyon, France
4. Institut Gustave Roussy, Biopathology, F-94800 Villejuif, France
5. University Paris Sud, F-91400 Orsay, France