American College of Obstetricians and Gynecologists | Frequently asked questions: Pregnancy FAQ188: Multiple pregnancy |
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American College of Obstetricians and Gynecologists |
Preterm birth: Risk factors, interventions for risk reduction, and maternal prognosis.
American College of Obstetricians and Gynecologists | American College of Obstetricians and Gynecologists |
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American College of Obstetricians and Gynecologists | Frequently asked questions: Pregnancy FAQ098: Special tests for monitoring fetal well-being |
Pregnancy loss miscarriage : Risk factors, etiology, clinical manifestations, and diagnostic evaluation.
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