Dziadziuszko R, Witta SE, Cappuzzo F, Park S, Tanaka K, Danenberg PV, Bar?n AE, Crino L, Franklin WA, Bunn PA, Varella-Garcia M, Danenberg KD, Hirsch FR. Epidermal growth factor receptor messenger RNA expression, gene dosage, and gefitinib sensitivity in non-small cell lung cancer. Clin Cancer Res. 2006 May 15; 12(10):3078-84.