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Qin Y, Shi Y, Zhao Y, Carson SA, Simpson JL, Chen ZJ.Qin Y, et al. Among authors: simpson jl.Fertil Steril. 2009 Apr;91(4 Suppl):1507-9. doi: 10.1016/j.fertnstert.2008.08.020. Epub 2008 Oct 17.Fertil Steril. 2009.PMID: 18930203Free article.
Qin Y, Vujovic S, Li G, Li J, Dalgleish R, Simpson JL, Ivanisevic M, Ivovic M, Tancic M, Al-Azzawi F, Chen ZJ.Qin Y, et al. Among authors: simpson jl.Maturitas. 2014 Jan;77(1):64-7. doi: 10.1016/j.maturitas.2013.09.006. Epub 2013 Sep 20.Maturitas. 2014.PMID: 24103315