Bahadir Arikan, T., Mutevelli Sozuer, E., Topal, U., Dal, F. and Kubra Bozkurt, G. 2021. Evaluation of factors related to postoperative mortality in patients who underwent pancreatoduodenectomy due to periampullary region tumors . Annals of Medical Research. 27, 12 (May 2021), 3065–3070.