MISSING, Authors. The back pain epidemic. Acta Orthopaedica, [S. l.], v. 60, n. 6, p. 633–634, 1989. DOI: 10.3109/17453678909149591. Disponível em: https://actaorthop.org/actao/article/view/22605. Acesso em: 20 may. 2026.