Id http://purl.bioontology.org/ontology/CSP/5003-0013
http://purl.bioontology.org/ontology/CSP/5003-0013
Preferred Name

clinical trial phase IV

Definitions
phase IV studies are done after the drug or treatment has been marketed; studies continue testing the study drug or treatment to collect information about its effect in various populations and any side effects associated with long term use.
Synonyms
double blind study
placebo controlled study
clinical trial phase II/III/IV
phase IV trial
Type http://www.w3.org/2002/07/owl#Class
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