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) Sakurabayashi Motowo,Studies on intrauterine contraceptive devices-4-The position of IUD in the cavity of uterus and nidation of fertilized ova,Acta obstetrica et gynaecologica Japonica,00016330,Tokyo : Japanese Obsterical & Gynecological Society,1969-10,16,4,275-284,https://cir.nii.ac.jp/crid/1520290883827403904,