[Jorge]

I feel that different bodies of community can be more effective than others depending on the task at hand.  CABs are often times well-versed on the the clinical trial process, so generally understand what would feasible for trial sites in carrying certain recommendation.  CABs are often times diverse, at least in my experience, so advise may be given from people that are not necessarily from some study target populations.  Hosting focus groups can be highly effective, if advise is needed from a specific target population in greater numbers than what you may find among your CAB.