Georgopoulos, V., Smith, S., McWilliams, D., Vincent, T., Watt, F., & Walsh, D. (2021). The patient acceptable symptom state for knee pain - a systematic literature review and meta-analysis. Osteoarthritis and Cartilage, 29(Suppl. 1), S52. https://doi.org/10.1016/j.joca.2021.02.076