Media type: E-Article Title: Social networks and risk of neural tube defects Contributor: Carmichael, Suzan L.; Shaw, Gary M.; Neri, Eric; Schaffer, Donna M.; Selvin, Steve Published: Springer Science and Business Media LLC, 2002 Published in: European Journal of Epidemiology, 18 (2002) 2, Seite 129-133 Language: English DOI: 10.1023/a:1023079326786 ISSN: 0393-2990 Keywords: Epidemiology Origination: Footnote: