Horlocker Terese T, Wedel Denise J, Benzon Honorio, Brown David L, Enneking F Kayser, Heit John A, Mulroy Michael F, Rosenquist Richard W, Rowlingson John, Tryba Michael, Yuan Chun-Su
Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota 55905, USA.
Reg Anesth Pain Med. 2003 May-Jun;28(3):172-97. doi: 10.1053/rapm.2003.50046.