Falkmer , S. et al. 1981. Significance of Argyrophil Parenchymal Cells in the Pancreatic Islets in Persistent Neonatal Hypoglycemia with Hyperinsulinism of Familial Type. Upsala Journal of Medical Sciences. 86, 2 (June 1981), 111–117. DOI:https://doi.org/10.3109/03009738109179217.