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Zeng D, Chen Q, Chen MH, Ibrahim JG; AMGEN RESEARCH GROUP.Zeng D, et al. Among authors: chen q, chen mh.Biometrika. 2012 Mar;99(1):167-184. doi: 10.1093/biomet/asr062. Epub 2011 Dec 29.Biometrika. 2012.PMID: 23049136Free PMC article.
Zhang Y, Chen MH, Ibrahim JG, Zeng D, Chen Q, Pan Z, Xue X.Zhang Y, et al. Among authors: chen q, chen mh.Lifetime Data Anal. 2014 Jan;20(1):76-105. doi: 10.1007/s10985-013-9254-8. Epub 2013 Mar 30.Lifetime Data Anal. 2014.PMID: 23543121Free PMC article.
Chen Q, Chen MH, Ohlssen D, Ibrahim JG.Chen Q, et al. Among authors: chen mh.Stat Med. 2013 Oct 30;32(24):4180-95. doi: 10.1002/sim.5812. Epub 2013 Apr 26.Stat Med. 2013.PMID: 23620446Free PMC article.
Chen Q, Zeng D, Ibrahim JG, Chen MH, Pan Z, Xue X.Chen Q, et al. Among authors: chen mh.Lifetime Data Anal. 2015 Apr;21(2):259-79. doi: 10.1007/s10985-014-9301-0. Epub 2014 Jul 30.Lifetime Data Anal. 2015.PMID: 25073864Free PMC article.
Ibrahim JG, Kim S, Chen MH, Shah AK, Lin J.Ibrahim JG, et al. Among authors: chen mh.Stat Methods Med Res. 2019 Oct-Nov;28(10-11):3415-3436. doi: 10.1177/0962280218801147. Epub 2018 Oct 12.Stat Methods Med Res. 2019.PMID: 30309294Free PMC article.