2Williamson S K,McCoy S A,Gandara D R,et al.Phase11trial of gemcitabine plus irinotecan in patients with esophageal cancer:a Southwest Oncology Group trial[J].Am J Clin Oncol,2007,29(2):116-122.
3Lorenzen S,Duyster J,Lersch C,et al.Capecitabine plus doeetaxel every3weeks in first-and second-line metastatic oesophageal cancer:final results of a phase11trial[J].Br J Cancer,2007,92(12):2129-2133.
