RT Journal Article SR Electronic T1 Consanguinity and national IQ scores JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 566 OP 567 DO 10.1136/jech.2007.069021 VO 62 IS 6 A1 Saadat, M YR 2008 UL http://jech.bmj.com/content/62/6/566.2.abstract AB