1. Department of Anesthesiology, Critical Care, and Pain Management, Hospital for Special Surgery, New York, NY, United States
2. Department of Anesthesiology and Perioperative Medicine, University of Rochester, Rochester, NY, United States
3. Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, United States
4. Department of Neurology, University of Kiel, Kiel, Germany
5. Department of Anesthesiology, Perioperative and Pain Medicine, Harvard Medical School, Boston, MA, United States
6. Department of Anesthesiology and Perioperative Medicine, Queen's University, Kingston, ON, United States
7. School of Psychology, University of the Witwatersrand, Johannesburg, South Africa
8. Department of Anesthesiology, Tufts University, Boston, MA, United States
9. Department of Surgery and Cancer, Imperial College London, London, United Kingdom