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Yuan Y, Thall PF, Wolff JE.Yuan Y, et al. Among authors: thall pf.J R Stat Soc Ser C Appl Stat. 2012 Jan 1;61(1):135-149. doi: 10.1111/j.1467-9876.2011.01002.x.J R Stat Soc Ser C Appl Stat. 2012.PMID: 22408277Free PMC article.
Jin IH, Liu S, Thall PF, Yuan Y.Jin IH, et al. Among authors: thall pf.J Am Stat Assoc. 2014;109(506):525-536. doi: 10.1080/01621459.2014.881740.J Am Stat Assoc. 2014.PMID: 25382884Free PMC article.