FERNDALE, L; BHADREE, S; CHEN, W. Early online: External validation of a prognostic score for oesophageal cancer (PSOC) for patients treated with palliative intent in a resource-limited setting. South African Medical Journal, South Africa, v. 116, n. 5, p. e5118, 2026. DOI: 10.7196/. Disponível em: https://samajournals.co.za/index.php/samj/article/view/4209. Acesso em: 10 jun. 2026.