WeitzG., WoitallaJ., WellhönerP., SchmidtK., BüningJ., and FellermannK. “Does Etiology of Acute Pancreatitis Matter? A Review of 391 Consecutive Episodes”. JOP. Journal of the Pancreas, Vol. 16, no. 2, Mar. 2015, pp. 171-5, doi:10.6092/1590-8577/2959.