PubMed:28539663 / 412-537 JSONTXT

Annnotations TAB JSON ListView MergeView

    PubMed_ArguminSci

    {"project":"PubMed_ArguminSci","denotations":[{"id":"T3","span":{"begin":0,"end":125},"obj":"DRI_Background"}],"text":"However, data on farm visitors are often difficult to obtain because of the heterogeneity of their nature and privacy issues."}