{"paper_id":"788b2d92-511d-4237-8a0f-5ad05c5a3ad5","body_text":"-\nFumihisa CHISHIMA\nDept of Obstet. and Gynecol. Nihon University School of Medicine.\n-\nSatoshi HAYAKAWA\nDept of Obstet. and Gynecol. Nihon University School of Medicine.\n-\nTomoyuki FUJIKAWA\nDept of Obstet. and Gynecol. Nihon University School of Medicine.\n-\nNorihisa Nagai\nDept of Obstet. and Gynecol. Nihon University School of Medicine.\n-\nTakashi KANAEDA\nDept of Obstet. and Gynecol. Nihon University School of Medicine.\n-\nKatsuo Tsubata\nDept of Obstet. and Gynecol. Nihon University School of Medicine.\n-\nHideoki FUKUOKA\nDept of Developmental Medical Sciences Faculty of Medicine. Tokyo University\n-\nKazuo SATOH\nDept of Obstet. and Gynecol. Nihon University School of Medicine.","source_license":"CC0","license_restricted":false}