Lower hospital volume is associated with higher mortality after oesophageal, gastric, pancreatic and rectal cancer resection. Swiss Medical Weekly, [S. l.], v. 147, n. 2930, p. w14473, 2017. DOI: 10.4414/smw.2017.14473. Disponível em: https://smw.ch/index.php/smw/article/view/2335. Acesso em: 5 dec. 2025.