Al-Amri, Ali M., Vatte, Chittibabub; Cyrus, Cyril, Chathoth, Shahanas, Hashim, Tariq Mohammad, Yehia S. Mohamed, Ali, Rudaynah Ala, Alsaid, Abira, Ali, Amin Al. Novel mutations of the PIK3CA gene in head and neck squamous cell carcinoma. Cancer Biomarkers. Jan. 2016; 16(3) :377-383. http://DOI: 10.3233/CBM-160576