%0 Journal Article %T THE PROGNOSTIC IMPORTANCE OF HISTOLOGICAL CLASSIFICATION PROPOSED BY HSU IN NASOPHARYNGEAL CARCINOMA %A ÖMER UZEL, %A MAHMUT ÖZŞAHİN, %A SEDAT TURKAN, %A NÜKHET TÜZÜNER, %A SAİT OKKAN, %J Turk J Oncol %D 1994 %V 9 %P 021-024 %R