Programmed cell death-1 blockade in combination with stereotactic radiation in an orthotopic mouse model of hepatocellular carcinoma. Issue 2 (December 2015) - Friedman, David; Baird, Jason; Young, Kristina; Cottam, Benjamin; Jutric, Zeljka; Crittenden, Marka; Gough, Michael; Newell, Pippa