title: The value of preoperative radiotherapy in esophageal cancer: results of a study by the EORTC.
mesh_terms: D002986:Clinical Trials as Topic; D003131:Combined Modality Therapy; D004938:Esophageal Neoplasms / Q000401:mortality / Q000532:radiotherapy* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011300:Preoperative Care; D011446:Prospective Studies; D011897:Random Allocation