Wong, J. J., DeSouza, A., Hogg-Johnson, S., De Groote, W., Varmazyar, H., Mior, S. A., Stern, P. J., Southerst, D., Alexopulos, S., Belchos, M., Lemeunier, N., Nordin, M. C., Murnaghan, K., Cieza, A., & Côté, P. (2022). pre-rehabilitation scores of functioning measured using the World Health Organization Disability Assessment Schedule in persons with nonspecific low back pain: a scoping review. International journal of rehabilitation research, 45(4), 302–310. http://access.bl.uk/ark:/81055/vdc_100169531416.0x000015