Potential answers for "Clinical-trial staple"

⭐⭐⭐⭐ PLACEBO
⭐⭐⭐ PLACEBOEFFECT
⭐⭐⭐ PHASEII
⭐⭐⭐ PHASEI
⭐⭐⭐ DRUGS
⭐⭐⭐ GUINEAPIGS

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