PubMed:18945288 / 218-402 JSONTXT

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{"project":"LitCoin-NCBITaxon-2","denotations":[{"id":"T1","span":{"begin":71,"end":77},"obj":"OrganismTaxon"}],"text":"In a 3 stage sampling technique 2981 pupils from Government schools in Al Ain and private schools in Dubai were selected to take part in the study, of whom 2857 provided urine samples."}

{"project":"LitCoin-training-merged","denotations":[{"id":"T50146","span":{"begin":71,"end":77},"obj":"OrganismTaxon"}],"text":"In a 3 stage sampling technique 2981 pupils from Government schools in Al Ain and private schools in Dubai were selected to take part in the study, of whom 2857 provided urine samples."}