Active salvage chemotherapy versus best supportive care for patients with recurrent or metastatic squamous cell carcinoma of the esophagus refractory or intolerable to fluorouracil, platinum, and taxane.

Active salvage chemotherapy versus best supportive care for patients with recurrent or metastatic squamous cell carcinoma of the esophagus refractory or intolerable to fluorouracil, platinum, and taxane.