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Ovarian response and pregnancy outcome in poor-responder women: a randomized controlled trial on the effect of luteinizing hormone supplementation on in vitro fertilization cycles.
Barrenetxea G, Agirregoikoa JA, Jiménez MR, de Larruzea AL, Ganzabal T, Carbonero K. Barrenetxea G, et al. Among authors: agirregoikoa ja. Fertil Steril. 2008 Mar;89(3):546-53. doi: 10.1016/j.fertnstert.2007.03.088. Epub 2007 May 29. Fertil Steril. 2008. PMID: 17531989 Clinical Trial.
Heterotopic pregnancy: two cases and a comparative review.
Barrenetxea G, Barinaga-Rementeria L, Lopez de Larruzea A, Agirregoikoa JA, Mandiola M, Carbonero K. Barrenetxea G, et al. Among authors: agirregoikoa ja. Fertil Steril. 2007 Feb;87(2):417.e9-15. doi: 10.1016/j.fertnstert.2006.05.085. Epub 2006 Oct 30. Fertil Steril. 2007. PMID: 17074353 Free article. Review.