Crosby Gregory, Davis Peter J
From the *Department of Anaesthesia, Harvard Medical School, Brigham and Women's Hospital, Boston, Massachusetts; and †Department of Anesthesia, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania.
Anesth Analg. 2013 Dec;117(6):1270-2. doi: 10.1213/ANE.0b013e3182a9667f.