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International Journal of Clinical Oncology > 2003 > 8 > 6 > 352-356
Digestive Diseases and Sciences > 2003 > 48 > 4 > 670-676
International Journal of Clinical Oncology > 2003 > 8 > 6 > 352-356
Digestive Diseases and Sciences > 2003 > 48 > 4 > 670-676