Demiray, Atike Gökçen, et al. “Evaluation of Serum MicroRNA Let-7c and Let-7d As Predictive Biomarkers for Metastatic Pancreatic Cancer”. Turkish Journal of Gastroenterology, vol. 33, no. 8, Jan. 2022, pp. 696-03, doi:10.5152/tjg.2022.21829.