Trends in US sex ratio by plurality, gestational age and race/ethnicity.
Branum AM; Parker JD; Schoendorf KC; Human Reproduction (Oxford, England), 2009, vol. 24, issue 11, p 2936, ISSN 14602350. ISBN 14602350.

Full Text Resources Located for this Citation

View article on EBSCOhost(Login required)
View article via CrossRef