Umemura, S. (2014) “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. Journal of the Pancreas, 15(3), pp. 261–265. doi: 10.6092/1590-8577/2393.