Kasajima, A., Ishikawa, Y., Iwata, A., Steiger, K., Oka, N., Ishida, H., … Weichert, W. (2018). Inflammation and PD-L1 expression in pulmonary neuroendocrine tumors. Endocrine-Related Cancer. https://doi.org/10.1530/ERC-17-0427 (Original work published 2018)