PubMed:17166870 / 1118-1127 JSONTXT

{"project":"LitCoin-GeneOrGeneProduct-v2","denotations":[{"id":"T12","span":{"begin":0,"end":9},"obj":"GeneOrGeneProduct"}],"text":"frequency"}

{"project":"LitCoin-GeneOrGeneProduct-v0","denotations":[{"id":"T20","span":{"begin":0,"end":9},"obj":"GeneOrGeneProduct"}],"text":"frequency"}