Re: Advanced Maternal Age Increases the Risk of Very Preterm Birth, Irrespective of Parity: A Population-Based Register Study Standardised Categories of ‘Preterm Births’ Vital to Study Risks for Prematurity

BJOG: An International Journal of Obstetrics and Gynaecology - United Kingdom
doi 10.1111/1471-0528.15054
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Wiley