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. 2012 May 30;2(3):e001048. doi: 10.1136/bmjopen-2012-001048

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© 2012, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

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Cumulative survival estimated by flexible parametric models by tumour subgroups and socioeconomic quintile. (A) Early-stage non-small-cell lung cancer (NSCLC). (B) Stage III disease. (C) Advanced disease or small-cell lung cancer (SCLC).