Marx A, Glass JD, Sutter RW. Differential diagnosis of acute flaccid paralysis and its role in poliomyelitis surveillance. Epidemiol Rev 2000; 22(2): 298-316. [2] Sabin AB, Wright AM. Acute ascending myelitis following a monkey bite, with the isolation of a virus capable of reproducing the disease. J Exp Med 1934; 59(2): 115-136. [3]

Cannon S, Ritter FN. Vocal cord paralysis in postpoliomyelitis syndrome. Laryngoscope 1987; 97:981. Agre JC, Grimby G, Rodriquez AA, et al. A comparison of symptoms between Swedish and American post-polio individuals and assessment of lower limb strength--a four-year cohort study. Scand J Rehabil Med 1995; 27:183.