PD-L1/PD-1 crosstalk in colorectal cancer: are we targeting the right cells?(2018)Authors: Ramon Cantero-Cid, Jose German Casas Martin, Enrique Hernandez-Jimenez, Carolina Cubillos-Zapata, Anibal Varela-Serrano, Jose Avendano-Ortiz, Marta Casarrubios, Karla Montalban-Hernandez, Ignacio Villacanas-Gil, Laura Guerra-Pastrian, et al.