Morucci, G., M. G. Fiore, S. Magherini, J. J. Branca, M. Gulisano, L. Thyer, M. Ruggiero, and S. Pacini. “Vitamin D Binding Protein-Derived Macrophage Activating Factor Stimulates Proliferation and Signalling in a Human Neuronal Cell Line”. Italian Journal of Anatomy and Embryology, vol. 118, no. 2, Jan. 2014, p. 143, https://oajournals.fupress.net/index.php/ijae/article/view/3808.