Gallo, Daniela, Eliana Piantanida, Paola Badino, and Lorenzo Mortara. 2018. “The Story of a Vitamin for Bone Health That Upgraded to Hormone for Systemic Good Health”. Medicina Historica 2 (3): 152-60. https://www.mattioli1885journals.com/index.php/MedHistor/article/view/7766.