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APA Citation
Metges, J., François, E., Shah, M., Adenis, A., Enzinger, P., Kojima, T., Muro, K., Bennouna, J., Hsu, C., Moriwaki, T., Kim, S., Lee, S., Kato, K., Shen, L., Qin, S., Ferreira, P., Wang, R., Bhagia, P., Kang, S., & Doi, T. (n.d.). o-012The phase 3 KEYNOTE-181 study: pembrolizumab versus chemotherapy as second-line therapy for advanced esophageal cancer. Annals of oncology, 30, . http://access.bl.uk/ark:/81055/vdc_100094626634.0x00002e