Vaccaro, R., Severi, C., Serrao, G., Carabotti, M., Casini, A., Chirletti, P., & Onori, P. (2016). Endocrine cells distribution in human proximal small intestine: an immunohistochemical and morphometrical study. Italian Journal of Anatomy and Embryology, 121(1), 112–121. Retrieved from https://oajournals.fupress.net/index.php/ijae/article/view/1575