Cite
HARVARD Citation
Xiong, X. et al. (2015). Maternal Age and Preterm Births in Singleton and Twin Pregnancies Conceived By In Vitro Fertilisation in the United States. Paediatric and perinatal epidemiology. 29 (1), pp. 22-30. [Online].
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Xiong, X. et al. (2015). Maternal Age and Preterm Births in Singleton and Twin Pregnancies Conceived By In Vitro Fertilisation in the United States. Paediatric and perinatal epidemiology. 29 (1), pp. 22-30. [Online].