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) MOAYERI SE,Risk of monozygotic twinning with blastocyst transfer decreases over time : an 8-year experience,Fertil Steril,,,2007,,,,https://cir.nii.ac.jp/crid/1574231875352087680,