STRÖMBERG, Lars; ÖHLÉN, Gunnar; SVENSSON, Olle. Prospective payment systems and hip fracture treatment costs. Acta Orthopaedica, [S. l.], v. 68, n. 1, p. 6–12, 1997. DOI: 10.3109/17453679709003967. Disponível em: https://actaorthop.org/actao/article/view/20711. Acesso em: 25 apr. 2026.