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APA Citation
Al-Najjar, H., Evison, M., Crosbie, P., Martin, J., Barber, P., & Booton, R. (n.d.). 33: A tissue diagnosis in PS 3 patients with suspected lung cancer? Safety and diagnostic outcomes with EBUS-TBNA. Lung cancer, 87, S13–S14. http://access.bl.uk/ark:/81055/vdc_100048591831.0x000001