FRIBERG, Sten. Karolinska Institutet. Acta Orthopaedica, [S. l.], v. 30, n. 1-4, p. 82–83, 1961. DOI: 10.3109/17453676109149526. Disponível em: https://actaorthop.org/actao/article/view/30525. Acesso em: 18 may. 2026.