Predictive value of flexible proctosigmoidoscopy and laboratory findings for complete clinical responses after neoadjuvant chemoradiotherapy in patients with locally advanced primary rectal cancer: a retrospective cohort study. - Hadizadeh A; Kazemi-Khaledi H; Fazeli MS; Ahmadi-Tafti SM; Keshvari A; Akbari-Asbagh R; Keramati MR; Kazemeini A; Fazeli AR; Behboudi B; Parsaei M (International journal of colorectal disease, 2024)