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Wang N, Tikellis G, Sun C, Pezic A, Wang L, Wells JC, Cochrane J, Ponsonby AL, Dwyer T.Wang N, et al.Placenta. 2014 Jul;35(7):437-41. doi: 10.1016/j.placenta.2014.04.006. Epub 2014 Apr 26.Placenta. 2014.PMID: 24816479Free PMC article.