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)