Virginia J. VitzthumHilde SpielvogelJonathan ThornburgBrady T. West2026-03-222026-03-22200610.1016/j.fertnstert.2006.01.021https://doi.org/10.1016/j.fertnstert.2006.01.021https://andeanlibrary.org/handle/123456789/46990Citaciones: 40enLuteal phaseFollicular phasePregnancyEarly Pregnancy LossProspective cohort studyMedicinePopulationGynecologyUrineCorpus luteumA prospective study of early pregnancy loss in humansarticle