The Design of and Rationale for the Effect of Perioperative Inhaled Tiotropium for Patients with Chronic Obstructive Pulmonary Disease in Esophageal Cancer Surgery (EPITOPE): an Open-Label, Randomized, Parallel-Group Study. - Okamura A; Watanabe M; Kitazono S; Manoshiro H; Kasama E; Takahashi K; Toihata T; Otake R; Kozuki R; Imamura Y; Yamahara Y; Ishizuka N (European surgical research. Europaische chirurgische Forschung. Recherches chirurgicales europeennes, 2020)