4Cheng WM, Chan KH, Chen HL, et al . Assessing the risk of nasopharyngeal carcinoma on the basis of EBV antibody spectrum. Int J Cancer, 2002,97:489-492.
5Sillanaukee P, Ponnio M, Jaaskelainen IP. 0ccurrence of sialic acids in healthy humans and different disorders. Eur J Clin Invest, 1999,29:413-425.
6Kimura Y, Fujieda S, Takabayashi J, et al. Conventional tumor markers are prognstic indicators in patients with head and neck squamous cell carcinoma. Cancer Lett, 2000,155:163-168.
7Rawal RM, Patel PS, Patel BP, et al. Evaluation of glycoprotein constituents in head and neck cancer patients undergoing radiotherapy . Head Neck,1999,21:192-197.
8Bathi RJ, Nandimath K, Kannan N, et al. Evaluation of glycoproteins as prognosticators in head and neck malignancy. Indian J Dent Res, 2001, 12:93-99.