@article{df7156b06ff9467588afed68e436bbb0,
title = "Use of time-varying coefficients in a Cox regression model when the proportional hazard assumption is violated",
author = "Maofeng Wang and Weimin Li and Nadir Yehya and Garrett Keim and Thomas, \{Neal J.\}",
year = "2018",
month = nov,
day = "1",
doi = "10.1007/s00134-018-5351-1",
language = "English (US)",
volume = "44",
pages = "2017--2019",
journal = "Intensive Care Medicine",
issn = "0342-4642",
publisher = "Springer Science and Business Media Deutschland GmbH",
number = "11",
}