First trimester serum levels of 25-hydroxyvitamin D, free β-human chorionic gonadotropin, and pregnancy-associated plasma protein A in Spanish women
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| Description | scientific article published on 15 April 2011 |
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author: Faustino R Pérez-López Ana Maria Fernandez Alonso Peter Chedraui |
| Publication date | April 15, 2011 |
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