1. School of Medicine, Louisiana State University Health Sciences Center Shreveport, Shreveport, LA, USA
2. School of Medicine, LSU Health Sciences Center New Orleans, New Orleans, LA, USA
3. School of Medicine, Medical University of South Carolina, Charleston, SC, USA
4. Department of Anesthesiology, Louisiana State University Health Sciences Center Shreveport, Shreveport, LA, USA
5. Departments of Anesthesiology and Pharmacology, Toxicology, and Neurosciences, Louisiana State University Health Sciences Center Shreveport, Shreveport, LA, USA