1 Departments of Anesthesiology and Neurology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA Memorial Sloan-Kettering Cancer Center, New York, NY, USA National Institutes of Health Clinical Center, Bethesda, MD, USA M.D. Anderson Cancer Center, Houston, TX, USA Department of Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA, USA Department of Psychiatry & Behavioral Sciences, Johns Hopkins University, Baltimore, MD, USA Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA Pain Research Informatics, Medical Comorbidities and Education Center, VA Connecticut Healthcare System and Departments of Psychiatry, Neurology and Psychology, Yale University, New Haven, CT, USA Department of Neurosurgery, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA National Institutes of Health, Bethesda, MD, USA Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA Department of Pain Medicine and Palliative Care, Beth Israel Medical Center, New York, NY, USA Department of Anesthesiology, University of California San Diego, San Diego, CA, USA Children's Hospital and Harvard Medical School, Boston, MA, USA.