Why the United States preterm birth rate is declining
| Autor: | Schoen, Corina N. a, ∗, Tabbah, Sammy b, Iams, Jay D. c, Caughey, Aaron B. d, Berghella, Vincenzo a |
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| Zdroj: | In American Journal of Obstetrics and Gynecology August 2015 213(2):175-180 |
| Databáze: | ScienceDirect |
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