Referencias
Ferri FF. Ferri’s Clinical Advisor: Instant Diagnosis and Treatment. St. Louis, Mo: Mosby; 2005: 896-897.
Goetz CG, Pappert EJ. Textbook of Clinical Neurology. 2nd ed. Philadelphia, Pa: Saunders; 2003.
Marx JA, Hockberger RS, Walls RM, eds. Rosen’s Emergency Medicine: Concepts and Clinical Practice. 5th ed. St. Louis, Mo: Mosby; 2002:125,606.