doi.org/10.1136/thx.2003.018044, hdl.handle.net/1765/59755
Thorax: an international journal of respiratory medicine
Erasmus MC: University Medical Center Rotterdam

Janssen-Heijnen, M., Smulders, S., Lemmens, V., Smeenk, F., van Geffen, H. J. A. A., & Coebergh, J. W. (2004). Effect of comorbidity on the treatment and prognosis of elderly patients with non-small cell lung cancer. Thorax: an international journal of respiratory medicine, 59(7), 602–607. doi:10.1136/thx.2003.018044