Urman Richard D, Maurer Walter G
From the Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, Massachusetts; and Department of General Anesthesiology, The Cleveland Clinic Foundation, Cleveland, Ohio.
Anesth Analg. 2014 Jul;119(1):207-211. doi: 10.1213/ANE.0000000000000268.