[1] [1] B. W. Smith and J. D. Winefordner, Talanta 51, 131 (2000).

[2] [2] Y. Yazdi, N. Ramanujam, R. Lotan, M. F. Mitchell, W. Hittelman, and R. Richards-Kortum, Appl. Spectrosc. 53, 82 (1999).

[3] [3] Z. Huang, A. McWilliams, H. Lui, D. I. McLean, S. Lam, and H. Zeng, Int. J. Cancer 107, 1047 (2003).

[4] [4] H. Yamazaki, S. Kaminaka, E. Kohda, M. Mukai, and H. Hamaguchi, Radiation Medicine 21, 1 (2003).

[5] [5] Spectral Meter (Tsinghua University Press, Beijing).

[6] [6] M. B. Wallace, L. T. Perelman, V. Backman, J. M. Crawford, M. Fitzmaurice, M. Seiler, K. Badizadegan, S. J. Shields, I. Itzkan, R. R. Dasari, J. Van Dam, and M. S. Feld, Gastroenterology 119, 677 (2000).

[7] [7] I. Georgakoudi, B. C. Jacobson, J. Van Dam, V. Backman, M. B. Wallace, M. G. Muller, Q. Zhang, K. Badizadegan, D. Sun, G. A. Thomas, L. T. Perelman, and M. S. Feld, Gastroenterology 120, 1620 (2001).

[8] [8] T. D. Wang, G. S. Janes, Y. Wang, I. Itzkan, J. Van Dam, and M. S. Feld, Appl. Opt. 37, 8103 (1998).

[9] [9] R. R. Alfano, A. Pradhan, G. C. Tang, and S. J. Wahl, J. Opt. Soc. Am. B 6, 1015 (1989).

[10] [10] P. R. Carry, Biochemical Application of Raman and Resonance Spectroscopes (Academic Press, New York, 1982).

[11] [11] Q. Ma, H. Zhou, X. Li, and D. Xu, Chin. J. Chromatography 14, 277 (1996).

[12] [12] S. K. Gaby, A. Bendich, V. Singh, and L. Machlin, (eds.) Vitamin Intake and Health: A Scientific Review (Marcel Dekker Inc., New York, 1991).