Source:http://linkedlifedata.com/resource/pubmed/meshheading/2915539-Retrospective+Studies
| Subject | Predicate | Object | Context |
|---|---|---|---|
| pubmed-meshheading:2915539-... | rdf:type | pubmed:MeshHeading | lld:pubmed |
| pubmed-meshheading:2915539-... | pubmed:mesh | pubmed-mesh:Retrospective... | lld:pubmed |
| pubmed-article:2915539 | pubmed:meshHeading | pubmed-meshheading:2915539-... | lld:pubmed |