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Madkour AS, Harville EW, Xie Y.Madkour AS, et al. Among authors: xie y.Matern Child Health J. 2014 Apr;18(3):663-71. doi: 10.1007/s10995-013-1291-0.Matern Child Health J. 2014.PMID: 23771237Free PMC article.
Amyx M, Xiong X, Xie Y, Buekens P.Amyx M, et al. Among authors: xie y.Matern Child Health J. 2017 Feb;21(2):306-314. doi: 10.1007/s10995-016-2115-9.Matern Child Health J. 2017.PMID: 27439422Free PMC article.