Source:http://linkedlifedata.com/resource/pubmed/meshheading/6857500-Retrospective+Studies
| Subject | Predicate | Object | Context |
|---|---|---|---|
| pubmed-meshheading:6857500-... | rdf:type | pubmed:MeshHeading | lld:pubmed |
| pubmed-meshheading:6857500-... | pubmed:mesh | pubmed-mesh:Retrospective... | lld:pubmed |
| pubmed-article:6857500 | pubmed:meshHeading | pubmed-meshheading:6857500-... | lld:pubmed |