What The Study Did: This randomized clinical trial examined the effects of daily folic acid and zinc supplementation in men on semen quality and live births among 2,300 couples planning infertility treatment.
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Authors: Enrique F. Schisterman, Ph.D., of the Eunice Kennedy Shriver National Institute of Child Health and Human Development in Bethesda, Maryland, is the corresponding author.
(doi:10.1001/jama.2019.18714)
Editor's Note: The article includes conflict of interest and funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, financial disclosures, funding and support, etc.
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Media advisory: The full study is linked to this news release.
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Journal
JAMA