Non-visualized pregnancy losses (NVPLS): diagnostic factors and reproductive outcome in a cohort of 1064 patients with recurrent pregnancy loss (RPL) Research Authors MS Iews, M Elgendi, AO Abdelkareem, F AbdelHafez, A Hashem, D Bloomenthal, C Williams, MA Bedaiwy Research Journal Fertility and Sterility Research Member Faten Farouk AbdelHafez Ahmed