Sadaf, S., A. Loya, S. Mushtaq, N. Akhter, R. Hussain, and A. Jamshed. “CORRELATION OF P21 EXPRESSION IN HEAD AND NECK SQUAMOUS CELL CARCINOMA WITH CLINICOPATHOLOGIC AND PROGNOSTIC PARAMETERS”. Journal of Cancer & Allied Specialties, Vol. 1, no. 2, Nov. 2015, doi:10.37029/jcas.v1i2.33.