6577 POSTER Investigating Potential Biomarkers for Survival With Erlotinib in Patients With Advanced Pancreatic Cancer – Results of the Phase II B021129 Study - Ducreux, M.; Davidenko, I.; Bridgewater, J.; Kupcinskas, L.; Johannsdottir, H.; van der Horst, T.; Klughammer, B.; Propper, D. (European Journal of Cancer, 2011)