1. Associate Scientist.
2. Assistant Scientist, Department of Anesthesiology, Perioperative Medicine, and Pain Management.
3. Senior Research Scientist, Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, Texas.
4. Professor and Chief, Division of Pain Medicine, Department of Anesthesiology, Perioperative Medicine, and Pain Management, University of Miami, LM Miller School of Medicine.