Changes of synaptic efficacy can be part of events of an (addiction cycle).
Research may evaluate an efficacy of (prevention interventions).
A study may compare an efficacy of methadone to buprenorphine.
A randomized controlled trial may examine an efficacy of an intervention.
An efficacy of (therapy procedures) may be moderated by an identity of families.
Efficacy may be measured in rates of some (family treatment entry).
A randomized trial can be on an efficacy of (disulfiram therapy).