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Based on the experiences of the pilot study in1 990 to 1 995,a National Food and NutritionSurveillance System was established in 1 997. Un-der the collaboration of the Food and NutritionSurveillance System(FNSS) Working Group of theChinese Academy of Prev
Based on the experiences of the pilot study in 1 990 to 1 995, a National Food and Nutrition Surveillance System was established in 1 997. Un-der the collaboration of the Food and Nutrition Surveillance System (FNSS) Working Group of the Chinese Academy of Prev