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Yang L, Helbich-Poschacher V, Cao C, Klebermass-Schrehof K, Waldhoer T. Maternal altitude and risk of low birthweight: A systematic review and meta-analyses. Placenta. 2020 Nov;101():124–31. doi: 10.1016/j.placenta.2020.09.010. PMID: 32956874. |