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Wang M, Liao X, Spiegelman D.Wang M, et al. Among authors: liao x.J Stat Plan Inference. 2013 Nov 1;143(11):10.1016/j.jspi.2013.06.010. doi: 10.1016/j.jspi.2013.06.010.J Stat Plan Inference. 2013.PMID: 24187429Free PMC article.
Wang M, Liao X, Laden F, Spiegelman D.Wang M, et al. Among authors: liao x.Stat Med. 2016 Jun 15;35(13):2283-95. doi: 10.1002/sim.6864. Epub 2016 Jan 10.Stat Med. 2016.PMID: 26750582Free PMC article.