Declan Butler. Show Affiliations »
Abstract
Mesh: See more » Birth Rate/ethnologyBirth Rate/trendsFemaleFertility/physiologyFollow-Up StudiesHumansInfertility/epidemiologyInfertility/etiologyMalePregnancyPrenatal Exposure Delayed EffectsReproductive Medicine/methodsReproductive Medicine/trendsRetrospective StudiesSperm Count/statistics & numerical dataTwin Studies as Topic
Year: 2004 PMID: 15525975 DOI: 10.1038/432038a
Source DB: PubMed Journal: Nature ISSN: 0028-0836 Impact factor: 49.962