title: Molecular characterization of toxin A-negative, toxin B-positive variant strains of Clostridium difficile isolated in Korea.
authors.affiliation: Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul 120-752, Korea.
authors.forename: Sue Jung
authors.initials: SJ
authors.lastname: Kim
authors.forename: Heejung
authors.initials: H
authors.lastname: Kim
authors.forename: Younghee
authors.initials: Y
authors.lastname: Seo
authors.forename: Dongeun
authors.initials: D
authors.lastname: Yong
authors.forename: Seok Hoon
authors.initials: SH
authors.lastname: Jeong
authors.forename: Yunsop
authors.initials: Y
authors.lastname: Chong
authors.forename: Kyungwon
authors.initials: K
authors.lastname: Lee