{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Confounding and selection bias in case control studies","author_name":"Roderick J. A. Little","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3HG/bigB003HGGQ7U.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003HGGQ7U.html\">Confounding and selection bias in case control studies</a>","width":400,"height":300}