BERGQUIST-ULLMAN, Marianne; LARSSON, Ulf. Acute Low Back Pain in Industry: A Controlled Prospective Study with Special Reference to Therapy and Confounding Factors. Acta Orthopaedica, [S. l.], v. 48, n. sup170, p. 1–117, 1977. DOI: 10.3109/ort.1977.48.suppl-170.01. Disponível em: https://actaorthop.org/actao/article/view/29322. Acesso em: 11 may. 2026.