From the Anesthesiology Department, Hospital CLINIC de Barcelona, and Neuroimmunology Research Group, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain (P.G.); the Department of Anesthesia and Perioperative Care, University of California at San Francisco, San Francisco, California (P.G.); the Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, California (S.L.S.); and the Department of Bioengineering and Therapeutic Sciences, University of California at San Francisco, San Francisco, California (S.L.S.).