Lundqvist, M., and K. Ouberg. “In Vitro Culture of Neuroendocrine Tumors of the Pancreas and Gut”. Acta Oncologica 28, no. 3 (January 1, 1989): 335–339. Accessed February 17, 2025. https://medicaljournalssweden.se/actaoncologica/article/view/33100.