著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Jennifer J. Frost and Jacqueline E. Darroch,"Factors Associated with Contraceptive Choice and Inconsistent Method Use, United States, 2004",Perspectives on Sexual and Reproductive Health,1538-6341,Guttmacher Institute,2008-06,40,2,94-104,https://cir.nii.ac.jp/crid/1363107370310836096,https://doi.org/10.1363/4009408