title: Erratum.
abstract: [This corrects the article on p. 355 in vol. 20, PMID: 25548741.][This corrects the article on p. 368 in vol. 20, PMID: 25548743.].
authors.forename: Byung-Cheol
authors.initials: BC
authors.lastname: Song
authors.forename: Yoo-Kyung
authors.initials: YK
authors.lastname: Cho
authors.forename: Hyeyoung
authors.initials: H
authors.lastname: Jwa
authors.forename: Eun Kwang
authors.initials: EK
authors.lastname: Choi
authors.forename: Heung Up
authors.initials: HU
authors.lastname: Kim
authors.forename: Hyun Joo
authors.initials: HJ
authors.lastname: Song
authors.forename: Soo-Young
authors.initials: SY
authors.lastname: Na
authors.forename: Sun-Jin
authors.initials: SJ
authors.lastname: Boo
authors.forename: Seung Uk
authors.initials: SU
authors.lastname: Jeong