Dunn,, "Identification and characterisation of trajectories of sickness absence due to musculoskeletal pain: a 1-year population-based study Tarjei Rysstad1; Margreth Grotle1, 2; Lene Aasdahl3, 4; Kate M. Dunn5; Anne Therese Tveter1", Journal of Occupational Rehabilitation, 2022