P. Klunklin, S. Isaradisaikul, P. Traisathit, and I. Chitapanarux, “A Comparative Study of Sensorineural Hearing Loss in the Treatment of Nasopharyngeal Carcinoma: Conventional Radiation Vs IMRT Technique”, J Thai Assn of Radiat Oncol, vol. 18, no. 1, pp. 10–17, Jun. 2012.