title: Preaortic iliac vein and double inferior vena cava.
authors.affiliation: Division of Cardiovascular Surgery, Showa General Hospital, Tokyo, Japan. Electronic address: ogiwara_showa@yahoo.co.jp.
authors.forename: Masanori
authors.initials: M
authors.lastname: Ogiwara
authors.affiliation: Division of Cardiovascular Surgery, Showa General Hospital, Tokyo, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Ozaki
authors.affiliation: Division of Cardiovascular Surgery, Showa General Hospital, Tokyo, Japan.
authors.forename: Mika
authors.initials: M
authors.lastname: Iwazaki