1. Department of Digestive Surgery and
2. Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
3. Department of Pathology, University Medical Centre, Gui de Chauliac Hospital, Montpellier, France
4. University Institute of Clinical Research UM1, EA2415, Epidemiology, Biostatistics & Public Health, Montpellier, France
5. Cell and Tissue Biopathology of Tumors Department, University Medical Centre, Saint Eloi Hospital, Montpellier, France
6. Institute of Research in Biotherapy, Laboratory of Rare Human Circulating Cells, University Medical Centre, Saint-Eloi Hospital, Montpellier, France