Petersson , B., A. Andersson, C. Hellerström, C.-G. Groth, R. Gunnarsson, S. Sandler, I. Swenne, and J . Östman. 1981. “Transplantation of Pancreatic Islets”. Upsala Journal of Medical Sciences 86 (2):213-18. https://doi.org/10.3109/03009738109179231.