Behboudi Farahbakhsh, Faegheh, et al. “TGF-?1 Polymorphisms -509 C>T and +915 G>C and Risk of Pancreatic Cancer”. Gastroenterology and Hepatology from Bed to Bench, vol. 10, no. 1, Feb. 2017, pp. 14-20, doi:10.22037/ghfbb.v0i0.958.