Effects of regional anesthesia techniques on local anesthetic plasma levels and complications in carotid surgery a randomized controlled pilot trial - Rössel, Thomas; Uhlig, Christopher; Pietsch, Jörg; Ludwig, Stefan; Koch, Thea; Richter, Torsten; Spieth, Peter Markus; Kersting, Stephan (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2019)