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) Roberto Marci and Ilaria Soave and Giuseppe Lo Monte,Spontaneous pregnancy and unexplained infertility: A gift with many whys,North American Journal of Medical Sciences,1947-2714,Medknow,2012,4,10,512,https://cir.nii.ac.jp/crid/1360580238760064384,https://doi.org/10.4103/1947-2714.102010