Immortal time bias in retrospective analysis: comment on ‘Efficacy and safety of long-term treatment with lenalidomide and dexamethasone in patients with relapsed/refractory multiple myeloma’
Crossref DOI link: https://doi.org/10.1038/bcj.2015.4
Published Online: 2015-02-27
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Hsieh, P-Y
Liu, C-J
Teng, C-J
Text and Data Mining valid from 2015-02-27
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Article History
First Online: 27 February 2015
Competing interests
: The authors declare no conflict of interest.