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APA Citation
Greenhalgh, J. (. (2015). Erlotinib and gefitinib for treating non-small cell lung cancer that has progressed following prior chemotherapy (review of NICE technology appraisals 162 and 175) : a systematic review and economic evaluation. Southampton : NIHR Journals Library. http://access.bl.uk/ark:/81055/vdc_100037699305.0x000001