Ratcliffe, Anthony, Ronald P Grelsamer, Howard Kiernan, Fatemeh Saed-Nejad, and Denise Visco. 1995. “High Levels of Aggrecan Aggregate Components Are Present in Synovial Fluids from Human Knee Joints With Chronic Injury or Osteoarthrosis”. Acta Orthopaedica 66 (sup266):111-15. https://doi.org/10.3109/17453679509157664.