| Subject | Predicate | Object | Context |
|---|---|---|---|
| pubmed-meshheading:21173036... | rdf:type | pubmed:MeshHeading | lld:pubmed |
| pubmed-meshheading:21173036... | pubmed:mesh | pubmed-mesh:Ultrasonography... | lld:pubmed |
| pubmed-article:21173036 | pubmed:meshHeading | pubmed-meshheading:21173036... | lld:pubmed |