1 Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA, United States.
2 Department of Anesthesiology and Perioperative Medicine, Chronic Pain Division, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, United States.
3 Tufts University School of Medicine, Department of Anesthesiology, Newton-Wellesley Hospital, Newton, MA, United States.
4 Harvard Medical School, Boston, MA, United States.
5 Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, MD.
6 Division of Pain Medicine, University of California San Diego, CA, United States.
7 Department of Anesthesiology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, LA, United States.