Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KISHIMOTO Keiko and KATAYAMA Takaaki,The efficacy of umbilical artery detemination for hyper coiled cord,日本周産期・新生児医学会雑誌 = Journal of Japan Society of Perinatal and Neonatal Medicine,1348964X,,2013-09-01,49,3,953-956,https://cir.nii.ac.jp/crid/1573105975983814912,