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Preconception Hemoglobin and Ferritin Concentrations Are Associated with Pregnancy Outcome in a Prospective Cohort of Chinese Women

Preconception HemoglobinFertilityMaternal Cardiovascular OutcomeMaternal ComplicationReproductive HealthGynecologyMaternal HealthPregnancyProspective CohortMaternal-fetal MedicineChinese WomenPublic HealthMedicineEpidemiologyWomen's HealthHigh-risk Pregnancy