Gemcitabine Combined with Capecitabine Compared to Gemcitabine with or without Erlotinib as First-Line Chemotherapy in Patients with Advanced Pancreatic Cancer.

Gemcitabine Combined with Capecitabine Compared to Gemcitabine with or without Erlotinib as First-Line Chemotherapy in Patients with Advanced Pancreatic Cancer.