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Portlock, C. S.; Yahalom, J. In Goldman, L.; Ausiello, D. (Eds.) Cecil Textbook of Medicine. 22nd ed (2004)
Kacker, A.; Wolden, S.; Pfister, D. G.; Kraus, D. H. In Myers, E. N.; Suen, J. Y.; Myers, J. N.; Hanna, E. Y. N. (Eds.) Cancer of the Head and Neck. 4th ed (2003)
