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) Koji Hara and Makoto Kuroki and Shingo Matsumura and Sayuri Shiraishi and Shuichi Ito and Kentaro Kurasawa and Azusa Arimoto and Yohei Matsuzaki,"Evaluation of planned number of children, the well-being of the couple and associated factors in a prospective cohort in Yokohama (HAMA study): study protocol",BMJ Open,2044-6055,BMJ,2024-02,14,2,e076557,https://cir.nii.ac.jp/crid/1360021390572983808,https://doi.org/10.1136/bmjopen-2023-076557