Burak Veli Ülger, et al. “New Hormones to Predict the Severity of Gallstone-Induced Acute Pancreatitis”. Turkish Journal of Gastroenterology, vol. 25, no. 6, July 2019, pp. 714-7, https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/3064.