![Cyclooxygenase-2 expression in advanced nasopharyngeal carcinoma—a prognostic evaluation and correlation with hypoxia inducible factor 1α and vascular endothelial growth factor]()
Cyclooxygenase-2 expression in advanced nasopharyngeal carcinoma—a prognostic evaluation and correlation with hypoxia inducible factor 1α and vascular endothelial growth factorCharles M.L. Chan; Brigette B.Y. Ma; Edwin P. Hui; Sze.C.C. Wong; Frankie K.F. Mo; Sing. F. Leung; Michael K.M. Kam; Anthony T.C. Chan · 2007