Duncan, R. P., Van Dillen, L. R., Garbutt, J. M., Earhart, G. M., & Perlmutter, J. S. (2019). Low Back Pain--Related Disability in Parkinson Disease: Impact on Functional Mobility, Physical Activity, and Quality of Life. Phys Ther.

Duncan, Ryan P., Linda R. Van Dillen, Jane M. Garbutt, Gammon M. Earhart, و Joel S. Perlmutter. "Low Back Pain--Related Disability in Parkinson Disease: Impact On Functional Mobility, Physical Activity, and Quality of Life." Phys Ther 2019.

Duncan, Ryan P., et al. "Low Back Pain--Related Disability in Parkinson Disease: Impact On Functional Mobility, Physical Activity, and Quality of Life." Phys Ther 2019.