bibliographic resource 174200 [br/174200]
https://w3id.org/oc/corpus/br/174200

is a

• document
• article

title

• Randomized, Controlled Trials, Observational Studies, and the Hierarchy of Research Designs

publication date

• 2000-01-01

contributor

• https://w3id.org/oc/corpus/ar/474073
• https://w3id.org/oc/corpus/ar/474074
• https://w3id.org/oc/corpus/ar/474075
• https://w3id.org/oc/corpus/ar/474076

format

• https://w3id.org/oc/corpus/re/61335

identifier

• https://w3id.org/oc/corpus/id/245593
• https://w3id.org/oc/corpus/id/245595
• https://w3id.org/oc/corpus/id/245596
• https://w3id.org/oc/corpus/id/245597

part of

• https://w3id.org/oc/corpus/br/174199