Sidler, D, P Thum, and SK Haerle. “Undifferentiated Carcinoma of Nasopharyngeal Type (UCNT): A Swiss Single-Institutional Experience During 1990-2005”. Swiss Medical Weekly 140, no. 1920 (May 22, 2010): 273–279. Accessed July 18, 2024. https://smw.ch/index.php/smw/article/view/1124.