1. Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, Harvard Medical School, Boston, MA, USA

2. Barrow Neurological Institute, Phoenix, AZ, USA

3. Valley Anesthesiology and Pain Consultants – Envision Physician Services, Phoenix, AZ; University of Arizona College of Medicine-Phoenix, Department of Anesthesiology, Phoenix, AZ; Creighton University School of Medicine, Department of Anesthesiology, Omaha, NE, USA