Hočevar-Boltežar, Irena, Jana Mekiš, and Primož Strojan. “Factors Affecting Voice Quality in Early Glottic Cancer Before and After Radiotherapy”. Radiology and Oncology 53, no. 4 (December 3, 2019): 459-464. Accessed May 30, 2020. https://www.radioloncol.com/index.php/ro/article/view/3326.