DOI: 10.1055/s-00000169

American Journal of Perinatology Reports

References

Mathews TJ, Hamilton BE.
First Births to Older Women Continue to Rise. NCHS Data Brief No. 152. Centers for Disease Control and Prevention.
May, 2014. Available at:
http://www.cdc.gov/nchs/data/databriefs/db152.htm . Accessed August 24, 2016

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