培美曲塞治疗吉非替尼或二线化疗失败的肺腺癌临床研究
배미곡새치료길비체니혹이선화료실패적폐선암림상연구
Clinical investigation of efficacy of pemetrexed in patients with pulmonary adenocarcinoma after failure to second-line chemotherapy or gefitinib treatment
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