Dr. Wrobel is Chief, Neurological Surgery, Kern Medical Center, 1830 Flower Street, Bakersfield, CA 93305; E-mail: cjwrobel@sbcglobal.net.

The author has disclosed that he has no significant relationships with or financial interests in any commercial organizations pertaining to this educational activity.

Lippincott CME Institute, Inc., has identified and resolved all faculty conflicts of interest regarding this educational activity.

Category: Basic clinical