Smith, B. E., Selfe, J., Thacker, D., Hendrick, P., Bateman, M., Moffatt, F., …Logan, P. (2018). Incidence and prevalence of patellofemoral pain: a systematic review and meta-analysis. PLoS ONE, 13(1), Article e0190892. https://doi.org/10.1371/journal.pone.0190892