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)
ANDREWS WW,Second-trimester cervical ultrasound : associations with increased risk for recurrent early spontaneous delivery,Obstet Gynecol,,,2000,95,,222-226,https://cir.nii.ac.jp/crid/1573105976031194112,