Sources of error in dietary surveys.
D000704:Analysis of Variance; D001205:Ascorbic Acid / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D005504:Food Analysis; D006801:Humans; D007558:Italy; D009749:Nutrition Surveys; D014801:Vitamin A / Q000032:analysis
D005227:Fatty Acids; D014801:Vitamin A; D001205:Ascorbic Acid