Musumeci, G., C. Loreto, S. Giunta, A. Castorina, M. Szychlinska, R. Imbesi, P. Castrogiovanni, and S. Castorina. “Beneficial Effects of PACAP in Osteoarthritis Cartilage. An “in vivo” and an ‘in vitro’ Morphological and Biochemical Study”. Italian Journal of Anatomy and Embryology, vol. 120, no. 1, Sept. 2015, p. 151, https://oajournals.fupress.net/index.php/ijae/article/view/4105.