Thanks for your reminder. In our study, 66 children were taken part in our analysis. But we failed to get all children’s feces and urine sample every day. Thus, we collected sample number was less the involved 66 children.
Lines 116-118: The amounts of samples were confused. Although there were 66 children involved in this study, 66 food samples, 62 feces and 64 urine samples were collected.