OLAYA-CONTRERAS, Patricia; STYF, Jorma. Illness behavior in patients on long-term sick leave due to chronic musculoskeletal pain. Acta Orthopaedica, [S. l.], v. 80, n. 3, p. 380–385, 2009. DOI: 10.3109/17453670902988352. Disponível em: https://actaorthop.org/actao/article/view/18767. Acesso em: 23 apr. 2026.