http://www.ncbi.nlm.nih.gov/pubmed/1483054
http://www.cnn.com/2009/WORLD/meast/12/17/gaza.gender.id/
https://en.wikipedia.org/wiki/Cousin_marriage_in_the_Middle_East
http://www.as.wvu.edu/~kgarbutt/QuantGen/Gen535Papers2/Inbreeding.htm
http://wikiislam.net/wiki/Cousin_Marriage_in_Islam
http://www.dawn.com/news/707896/young-arabs-question-centuries-old-tradition-of-cousin-marriages