U.S. Food and Drug Administration.  Center for Food Safety and Applied Nutrition.  Current State of Food Product Open Dates in the U.S. [Online], prepared by Eastern Research Group, Inc.  July 18, 2003.  Lexington, MA:  Eastern Research Group, Inc.  College Park, MD: FoodRisk.org [Distributor]. Available at: http://www.foodrisk.org/exclusives/FPODUS/Food_Open_Dating.pdf

U.S. Food and Drug Administration.  Center for Food Safety and Applied Nutrition.  Current State of Food Product Open Dates in the U.S.:  Manufacturers Survey Database [Data file], prepared by Eastern Research Group, Inc.  July 18, 2003.  Lexington, MA:  Eastern Research Group, Inc.  College Park, MD: FoodRisk.org [Distributor]. Available at: http://www.foodrisk.org/exclusives/FPODUS/

U.S. Food and Drug Administration.  Center for Food Safety and Applied Nutrition.  Current State of Food Product Open Dates in the U.S.:  Food Products Survey Database [Data file], prepared by Eastern Research Group, Inc.  July 18, 2003.  Lexington, MA:  Eastern Research Group, Inc.  College Park, MD: FoodRisk.org [Distributor]. Available at: http://www.foodrisk.org/exclusives/FPODUS/