Epidermal growth factor receptor mutations in needle biopsy/aspiration samples predict response to gefitinib therapy and survival of patients with advanced nonsmall cell lung cancer

Jin Yuan Shih, Chien Hung Gow, Chong Jen Yu, Chih Hsin Yang, Yih Leong Chang, Meng Feng Tsai, Ya Chieh Hsu, Kuan Yu Chen, Wen Pin Su, Pan Chyr Yang