Iyer Manoj H, Engoren Milo, Martin Matthew W
Department of Anesthesiology, University of Michigan Health System, 1500 E. Medical Center Dr., CVC 4172, Ann Arbor, MI 48109-5861, USA.
Anesth Analg. 2013 Feb;116(2):303-6. doi: 10.1213/ANE.0b013e318275341d. Epub 2013 Jan 9.