Simon GR, Ruckdeschel JC, Williams C, Cantor A, Chiappori A, Rocha Lima CM, Antonia S, Haura E, Wagner H, Robinson L, Sommers E, Alberts M, Bepler G. Gefitinib (ZD1839) in previously treated advanced non-small-cell lung cancer: experience from a single institution. Cancer Control. 2003 Sep-Oct; 10(5):388-95.