JACOBSEN, Klaus. Preface. Acta Orthopaedica, [S. l.], v. 52, n. sup194, p. 5–6, 1981. DOI: 10.3109/17453678109155624. Disponível em: https://actaorthop.org/actao/article/view/28909. Acesso em: 17 may. 2026.