Fenner, Helmut, David Taylor, Gerd Follkers, and Stefan Zueger. “The TNF-MMP-Matrix Network and Serum Markers for Cartilage Synthesis and Degradation”. Acta Orthopaedica 66, no. sup266 (January 1, 1995): 156–157. Accessed May 26, 2026. https://actaorthop.org/actao/article/view/21330.