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Association between second-trimester isolated high maternal serum maternal serum human chorionic gonadotropin levels and obstetric complications in singleton and twin pregnancies

Reproductive HealthObstetric ComplicationsGynecologyMaternal HealthPregnancyTwin PregnanciesMaternal-fetal MedicinePublic HealthEndocrinologyMedicineWomen's HealthHigh-risk PregnancyReproductive Endocrinology