Clinically meaningful improvement in symptoms and quality of life for patients with non-small-cell lung cancer receiving gefitinib in a randomized controlled trial

David Cella, Roy S. Herbst, Thomas J. Lynch, Diane Prager, Chandra P. Belani, Joan H. Schiller, Anne Heyes, Judith S. Ochs, Michael K. Wolf, Andrea C. Kay, Mark G. Kris, Ronald B. Natale