Marzioni, Daniela, Giovanni Tossetta, Caterina Licini, Francesca Orofino, Saverio Cinti, Mario Castellucci, and Antonio Giordano. 2017. “Expression of the Ciliary Neurotrophic Factor and Its Receptor α in Human Placenta of First and Third Trimester of Gestation”. Italian Journal of Anatomy and Embryology 121 (1):193. https://oajournals.fupress.net/index.php/ijae/article/view/2331.