Impact of KRAS mutations and co-mutations on clinical outcomes in pancreatic ductal adenocarcinoma oleh Abdelrahman Yousef, Mahmoud Yousef, Saikat Chowdhury, Kawther Abdilleh, Mark Knafl, Paul Edelkamp, Kristin Alfaro-Munoz, Ray Chacko, Jennifer Peterson, Brandon G. Smaglo, Robert A. Wolff, Shubham Pant, Michael S. Lee, Jason Willis, Michael Overman, Sudheer Doss, Lynn Matrisian, Mark W. Hurd, Rebecca Snyder, Matthew H. G. Katz, Huamin Wang, Anirban Maitra, John Paul Shen, Dan Zhao