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APA Citation
Selfe, J., Callaghan, M., Witvrouw, E., Richards, J., Dey, M. P., Sutton, C., Dixon, J., Martin, D., Stokes, M., Janssen, J., Ritchie, E., & Turner, D. (2013). targeted interventions for patellofemoral pain syndrome (TIPPS): classification of clinical subgroups. BMJ open, 3(9), . http://access.bl.uk/ark:/81055/vdc_100135544791.0x00000a