Variables associated to pathologic complete response, overall survival and disease-free survival in the neoadjuvant setting for esophageal cancer: a retrospective cohort analysis - Takeda, Flavio Roberto; Viyuela, Mateus Silva; Cruz Junior, Jurandir Batista da; Tustumi, Francisco; Braghiroli, Oddone Freitas Melro; Nobre, Karolyne Ernesto Luiz; Ribeiro Júnior, Ulysses; Sallum, Rubens Antonio Aissar; Cecconello, Ivan (International surgery, 2018)