Addition of platinum derivatives to neoadjuvant single-agent fluoropyrimidine chemoradiotherapy in patients with stage II/III rectal cancer: protocol for a systematic review and meta-analysis (PROSPERO CRD42017073064). - Hüttner FJ; Probst P; Kalkum E; Hackbusch M; Jensen K; Ulrich A; Büchler MW; Diener MK (Systematic reviews, 2018)