PubMed:22711886 / 16-24 JSONTXT

{"project":"LitCoin-GeneOrGeneProduct-v0","denotations":[{"id":"T2","span":{"begin":0,"end":8},"obj":"GeneOrGeneProduct"}],"text":"factor 2"}

{"project":"LitCoin-GeneOrGeneProduct-v2","denotations":[{"id":"T2","span":{"begin":0,"end":8},"obj":"GeneOrGeneProduct"}],"text":"factor 2"}