Junttila, A., Väyrynen, J. P., Ahtiainen, M., Kuopio, T., Mrena, J., Sihvo, E., & Helminen, O. (2021). Immune cell score, PD-L1 expression and prognosis in esophageal cancer. Acta Oncologica, 60(4), 544–548. https://doi.org/10.1080/0284186X.2020.1868571