title: Erratum to: History note: tragedy of Thorotrast.
authors.affiliation: Department of Diagnostic Radiology, Southern Tohoku General Hospital, 7-115, Yatsuyamada, Koriyama, Fukushima, 963-8563, Japan. takekawasd@mt.strins.or.jp.|Formerly Department of Radiology, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan. takekawasd@mt.strins.or.jp.
authors.forename: Shoichi
authors.initials: S
authors.lastname: Takekawa
authors.affiliation: Department of Pathology, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan.
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Ueda
authors.affiliation: Formerly Department of Radiology, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Hiramatsu
authors.affiliation: Formerly Department of Radiology, Dokkyo Medical University Koshigaya Hospital, 2-1-50, Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan.
authors.forename: Kihachiro
authors.initials: K
authors.lastname: Komiyama
authors.affiliation: Department of Diagnostic Radiology, Southern Tohoku General Hospital, 7-115, Yatsuyamada, Koriyama, Fukushima, 963-8563, Japan.
authors.forename: Hirotsugu
authors.initials: H
authors.lastname: Munechika