| Subject | Predicate | Object | Context |
|---|---|---|---|
| pubmed-meshheading:6688789-... | rdf:type | pubmed:MeshHeading | lld:pubmed |
| pubmed-meshheading:6688789-... | pubmed:mesh | pubmed-mesh:United States... | lld:pubmed |
| pubmed-article:6688789 | pubmed:meshHeading | pubmed-meshheading:6688789-... | lld:pubmed |