L. . Chan, W. . Yeo, S. F. . Leung, J. . Griffith, E. K. . Ng, and A. T. . Chan, “Delayed radiation myelopathy after concurrent chemoradiation for hypopharyngeal-esophageal carcinoma”, AO, vol. 44, no. 2, pp. 177–179, Mar. 2005.