1. Digestive Oncology Department; Beaujon University Hospital; Clichy France
2. Oncology Unit; Groupe Hospitalier Paris Saint Joseph; Paris France
3. Medical Oncology Department; Nanjing Bayi Hospital; Nanjing China
4. National Taiwan University Hospital; Taipei Taiwan ROC
5. Merck KGaA; Darmstadt Germany
6. Medical Oncology Department; Beaujon University Hospital; Clichy France