TY - JOUR TI - The importance of pretreatment performance status and LDH level in patients with stage III-IV nasopharyngeal carcinoma AU - YÜRÜT-ÇALOĞLU, V. AU - ÇALOĞLU, M. AU - KARAGÖL, H. AU - COŞAR-ALAS, R. AU - KOÇAK, Z. JO - Turk J Oncol PY - 2009 VL - 24 SP - 065 EP - 072 DO - ER -