Leissner Kay B, Mahmood Feroze, Aragam Jayashri R, Amouzgar Abolhassan, Ortega Rafael
Anesthesiology Service, VA Boston Healthcare Service, 1400 VFW Parkway, Boston, MA 02132, USA.
Anesth Analg. 2008 Aug;107(2):410-2. doi: 10.1213/ane.0b013e31817e65d0.