title: Erratum to: LC-MS-based quantification method for Achyranthes root saponins.
authors.affiliation: Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kawahara
authors.affiliation: Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Hoshino
authors.affiliation: Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Morimoto
authors.affiliation: Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
authors.forename: Tomofumi
authors.initials: T
authors.lastname: Shimizu
authors.affiliation: Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Narukawa
authors.affiliation: Research Center for Medicinal Plant Resources, National Institute of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaragi, 305-0843, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Fuchino
authors.affiliation: Research Center for Medicinal Plant Resources, National Institute of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaragi, 305-0843, Japan.
authors.forename: Nobuo
authors.initials: N
authors.lastname: Kawahara
authors.affiliation: Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan. kiuchi-fm@pha.keio.ac.jp.
authors.forename: Fumiyuki
authors.initials: F
authors.lastname: Kiuchi