A body can be constituted-of-or-filled-with randomized controlled trials.
A randomized controlled trial may meet (inclusion criteria).
Some randomized controlled trials may be included in a meta-analysis.
Some randomized controlled trials may be included in a review.
Randomized trials can be constituted-of-or-filled-with therapy.
Randomized trials can be constituted-of-or-filled-with (smoking cessation).
Randomized controlled trials can be constituted-of-or-filled-with treatments.