%0 Journal Article %T The importance of pretreatment performance status and LDH level in patients with stage III-IV nasopharyngeal carcinoma %A YÜRÜT-ÇALOĞLU, V. %A ÇALOĞLU, M. %A KARAGÖL, H. %A COŞAR-ALAS, R. %A KOÇAK, Z. %J Turk J Oncol %D 2009 %V 24 %P 065-072 %R