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Chinese Journal of Cancer Research > 2007 > 19 > 4 > 249-254
Digestive Diseases and Sciences > 2005 > 50 > 6 > 1087-1091
Chinese Journal of Cancer Research > 2007 > 19 > 4 > 249-254
Digestive Diseases and Sciences > 2005 > 50 > 6 > 1087-1091