Selective intra-carotid blood cooling in acute ischemic stroke: A safety and feasibility study in an ovine stroke model (Giorgio Franco Maria Cattaneo, Andrea M. Herrmann, Sebastian Alexander Eiden, Manuela Wieser, Elias Kellner, Soroush Doostkam, Patrick Süß, Selina Kiefer, Lisa Fauth, Christoph J Maurer, Julia Wolfertz, Bjoern Nitzsche, Michael Büchert, Tobias Jost, Gabriele Ihorst, Jörg Haberstroh, Christoph Mülling, Christoph Strecker, Wolf-Dirk Niesen, Mukesch Johannes Shah, Horst Urbach, Johannes Boltze, Stephan Meckel)