Comparison of three sedation regimes for spinal anesthesia in sheep.
Schumacher J, Russlies M, Eichler W, Grossherr M, Klotz KF.
Department of Anesthesiology, Medical University of Luebeck, Ratzeburger Allee 160, D-23538 Luebeck, Germany
http://www.ncbi.nlm.nih.gov/pubmed/11385726