@article{32170900ba354a33bacd5872192e328c,
title = "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'",
author = "Hsieh, {P. Y.} and Liu, {C. J.} and Teng, {C. J.}",
year = "2015",
month = jan,
day = "1",
doi = "10.1038/bcj.2015.4",
language = "English",
volume = "5",
journal = "Blood Cancer Journal",
issn = "2044-5385",
publisher = "Nature Publishing Group",
number = "2",
}