《英文msh词典》Drug Evaluation,FDA Phase 4
[入口词] Drug Evaluation,FDA Phase 4
[主题词] Clinical Trials,Phase IV
[英文释义] Planned post-marketing studies of diagnostic,therapeutic,or prophylactic drugs,devices,or techniques that have been approved for general sale. These studies are often conducted to obtain additional data about the safety and efficacy of a product. This concept includes phase IV studies conducted in both the U.S. and in other countries.