S. Umemura, “Autoimmune Pancreatitis Presenting a Short Narrowing of Main Pancreatic Duct with Subsequent Progression to Diffuse Pancreatic Enlargement over 24 Months; Natural History of Autoimmune Pancreatitis”, JOP. J Pancreas (Online), vol. 15, no. 3, pp. 261–265, May 2014.