Search on: OBSERVATIONAL STUDIES 
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Descriptor English:   Observational Studies 
Descriptor Spanish:   Estudios Observacionales 
Descriptor Portuguese:   Estudos Observacionais 
Tree Number:   SP5.001.012.038.049
Definition English:   Epidemiological study that does not involve, by the researcher, any kind of intervention in the population or group under study. (Free translation from the original: Last, 2001) 
Record Number:   50295 

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