title: Retraction: cortical margining capabilities of fins associated with ventral cervical spine instrumentation.
authors.affiliation: Department of Neurosurgery, Yongdong Severance Hospital, Yonsei University College of Medicine, 146-92 Dogok-dong, Kangnam-gu, Seoul 135-720, Korea. bhjin61@yumc.yonsei.ac.kr
authors.forename: Byung-Ho
authors.initials: BH
authors.lastname: Jin