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Current Gastroenterology Reports > 2011 > 13 > 2 > 157-165
The Journal of Primary Prevention > 2010 > 31 > 3 > 99-108
Cancer Causes & Control > 2008 > 19 > 4 > 361-369
Current Gastroenterology Reports > 2011 > 13 > 2 > 157-165
The Journal of Primary Prevention > 2010 > 31 > 3 > 99-108
Cancer Causes & Control > 2008 > 19 > 4 > 361-369