WADDELL, Gordon. How patients react to low back pain. Acta Orthopaedica, [S. l.], v. 64, n. sup251, p. 21–24, 1993. DOI: 10.3109/17453679309160108. Disponível em: https://actaorthop.org/actao/article/view/21825. Acesso em: 8 jul. 2026.