| Subject | Predicate | Object | Context |
|---|---|---|---|
| pubmed-meshheading:7907447-... | rdf:type | pubmed:MeshHeading | lld:pubmed |
| pubmed-meshheading:7907447-... | pubmed:mesh | pubmed-mesh:Ultrasonography... | lld:pubmed |
| pubmed-article:7907447 | pubmed:meshHeading | pubmed-meshheading:7907447-... | lld:pubmed |