title: Vertebral Artery Compression during Roll Tilt: Is the Edge of the Foramen Magnum a Culprit?
authors.affiliation: Department of Neurology, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Korea.
authors.forename: Jeong Yoon
authors.initials: JY
authors.lastname: Choi
authors.affiliation: Department of Neurology, Korea University College of Medicine, Korea University Guro Hospital, Seoul, Korea. nukseo@korea.ac.kr.
authors.forename: Woo Keun
authors.initials: WK
authors.lastname: Seo
authors.affiliation: Department of Neurology, Korea University College of Medicine, Korea University Guro Hospital, Seoul, Korea.
authors.forename: Kyungmi
authors.initials: K
authors.lastname: Oh
authors.affiliation: Department of Radiology, Korea University College of Medicine, Korea University Guro Hospital, Seoul, Korea.
authors.forename: Sang Il
authors.initials: SI
authors.lastname: Seo
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Guro Hospital, Seoul, Korea.
authors.forename: Namhyung
authors.initials: N
authors.lastname: Ryou
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Guro Hospital, Seoul, Korea.
authors.forename: Sung Won
authors.initials: SW
authors.lastname: Chae