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) BROWN JA,Ultrasound versus 'clinical touch' for catheter guidance during embryo transfer in women,Cochrane Database Syst Reviews,,,2007,1,,,https://cir.nii.ac.jp/crid/1574231876116469248,