Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ABENHAIM HA,Incidence and risk factors of amniotic fluid embolisms : A population-based study on 3 million births in the United States,Am J Obstet Gynecol,,,2008,199,,1-8,https://cir.nii.ac.jp/crid/1570572701418625408,