Phase II trial of gemcitabine (Gem), 5-fluorouracil (5FU), and leucovorin (LV) in patients with unresectable or metastatic biliary (Bili) and gallbladder (GB) carcinoma: A North Central Cancer Treatment Group (NCCTG) study. - Jacobson,S.D.; Alberts,S.R.; Mahoney,M.R. (Proc ASCO, 2003)