What is a clinical trial?
A、Aresearchstudytoinventanewmedicine.
B、Aresearchstudytofindthecausesofcancer.
C、Aresearchstudytohelpthepatientsfeelrelaxed.
D、Aresearchstudytoevaluateaneworexistingmedicalintervention.
发布时间:2025-07-02 18:03:21