Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Keiji Muramatsu and Yoko Aoyama and Daisuke Shigemi and Hideo Yasunaga and Kiyohide Fushimi and Shinya Matsuda,Association between hospital case volume and maternal adverse events in patients with placental abruption: An analysis using a Japanese national inpatient database,International Journal of Gynecology & Obstetrics,0020-7292,Wiley,2024-05-17,167,,439-444,https://cir.nii.ac.jp/crid/1872273591426491648,https://doi.org/10.1002/ijgo.15605