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) MOORE L,Abnormalities of the intra-abdominal fetal umbilical vein : reports of four cases and review of the literature,Ultrasound Obstet Gynecol,,,1996,7,,21-25,https://cir.nii.ac.jp/crid/1571980076135071744,