ZETTERBERG, Carl; ANDERSSON, Gunnar B. J. Fractures of the Proximal End of the Femur in Göteborg, Sweden, 1940–1979. Acta Orthopaedica, [S. l.], v. 53, n. 3, p. 419–426, 1982. DOI: 10.3109/17453678208992236. Disponível em: https://actaorthop.org/actao/article/view/28702. Acesso em: 2 may. 2026.