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Tough, S., Greene, C., Svenson, L. et al. Maternal Age and Its Relationship to Multiple Birth, Low Birth Weight and Preterm Delivery in In Vitro Fertilization(IVF)Pregnancies. Pediatr Res 45, 257 (1999). https://doi.org/10.1203/00006450-199904020-01530
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DOI: https://doi.org/10.1203/00006450-199904020-01530