1. Department of Food and Drugs, School of Pharmaceutical Sciences Federal University of Alfenas Alfenas Brazil
2. Department of Anesthesiology, pain and palliative care Santa Casa of Alfenas Alfenas Brazil
3. Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences Federal University of Alfenas Alfenas Brazil
4. Department of Statistics, Institute of Exact Sciences Federal University of Alfenas Alfenas Brazil
5. Department of Anesthesiology and Pain Medicine Lenox Hill Hospital New York USA