McRobert, C. J., Hill, J. C., Hay, E. M., & van der Windt, D. A. (2022). Identifying potential moderators of first-line treatment effect in patients with musculoskeletal shoulder pain: a systematic review. European Journal of Physiotherapy, 24(1), 1-15. https://doi.org/10.1080/21679169.2020.1752304