title: Puppy sign indicating bilateral dissection of internal carotid artery.
authors.affiliation: Department of Neurology, University of Munich, Klinikum Grosshadern, Muenchen, Germany.
authors.forename: Berend
authors.initials: B
authors.lastname: Feddersen
authors.forename: Jennifer
authors.initials: J
authors.lastname: Linn
authors.forename: Thomas
authors.initials: T
authors.lastname: Klopstock