title: Erratum to: Long-term stability of beam quality and output of conventional X-ray units.
authors.affiliation: Department of Radiology, Shiga Medical Center for Children, 5-7-30 Moriyama, Moriyama City, Shiga, 524-0022, Japan, ntoki@blue.plala.or.jp.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Fukuda
authors.forename: Kosuke
authors.initials: K
authors.lastname: Matsubara
authors.forename: Tosiaki
authors.initials: T
authors.lastname: Miyati