Mizumachi Takatsugu, Kano Satoshi, Sakashita Tomohiro, Hatakeyama Hiromitsu, Homma Akihiro, Fukuda Satoshi. A Clinical Study of Cases Diagnosed as Being Oropharyngeal Carcinoma after Cervical Mass Extirpation/Biopsy. Nippon Jibiinkoka Gakkai Kaiho. 2014. 117. 12. 1463-1470