G. Musumeci, M. Carnazza, and C. Loreto, “Beta-defensin-4 (HBD-4) is expressed in chondrocytes derived from normal and osteoarthritic cartilage encapsulated in poly(ethylene glycol) diacrylate (PEGDA) scaffold”, Ital J Anat Embryol, vol. 116, no. 2, p. 127, Nov. 2011.