title: Reply to When randomized trials and observational data disagree: the case of preoperative versus postoperative chemoradiotherapy for esophageal cancer.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Wojcieszynski
authors.forename: Nandita
authors.initials: N
authors.lastname: Mitra
authors.forename: Smith
authors.initials: S
authors.lastname: Apisarnthanarax
mesh_terms: D000230:Adenocarcinoma / Q000401:mortality* / Q000532:radiotherapy*; D002294:Carcinoma, Squamous Cell / Q000401:mortality* / Q000532:radiotherapy*; D004938:Esophageal Neoplasms / Q000401:mortality* / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D008297:Male