HELIÖ, Harri. Finnish Orthopedic Society. Acta Orthopaedica, [S. l.], v. 68, n. sup277, p. 46–48, 1997. DOI: 10.1080/17453674.1997.11744774. Disponível em: https://actaorthop.org/actao/article/view/20899. Acesso em: 24 may. 2026.