Programmed cell death 1 (PD-1) and its ligand (PD-L1) in common cancers and their correlation with molecular cancer type. - Gatalica Z; Snyder C; Maney T; Ghazalpour A; Holterman DA; Xiao N; Overberg P; Rose I; Basu GD; Vranic S; Lynch HT; Von Hoff DD; et al. (Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2014)