1 Georgetown University School of Medicine, Washington, DC, USA.
2 Beth Israel Deaconess Medical Center, Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School, 330 Brookline Ave., Boston, MA, 02215, USA. iurits@bidmc.harvard.edu.
3 Beth Israel Deaconess Medical Center, Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School, 330 Brookline Ave., Boston, MA, 02215, USA.
4 University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA.
5 Harvard Medical School, Harvard-MIT Division of Health Sciences and Technology, Boston, MA, USA.
6 Pain Specialty Group, Department of Pain Medicine, Newington, NH, USA.
7 Harvard Medical School, Boston, MA, USA.
8 Louisiana State University Health Sciences Center, Department of Anesthesiology, LA, Shreveport, USA.
9 Medical College of Wisconsin, Wauwatosa, WI, USA.
10 Department of Anesthesiology, Creighton University School of Medicine, NE, Omaha, USA.
11 Department of Anesthesiology, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA.
12 Valley Anesthesiology and Pain Consultants - Envision Physician Services, Phoenix, AZ, USA.