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Chen Y, Perng RP, Yang KY, Lin WC, Wu HW, Tsai CM, Whang-Peng J.Chen Y, et al.Lung Cancer. 2000 Aug;29(2):139-46. doi: 10.1016/s0169-5002(00)00106-9.Lung Cancer. 2000.PMID: 10963844Clinical Trial.