Yousif Elemam, Ibrahim Bakhit; Mohammed Yousif, Yousif; Abd Elaziz, Mohammed Sideeg
(International Journal of Research GRANTHAALAYAH, 2015-09)
Nasopharyngeal carcinoma (NPC) has a unique and complex etiology that is not completely
understood. The distinctive racial/ethnic and geographic distribution of NPC worldwide
suggests that both environmental factors and ...