IPD reviews are usually carried out as collaborative projects whereby all researchers contributing information from their studies, together with those managing the project, become part of an active collaboration. The projects are managed by a small local project group or secretariat, which may be aided in important and strategic decision-making by a larger advisory group. Results are usually published in the name of the collaborative group. The secretariat may also be responsible for organizing meetings of collaborators, to bring individuals together to discuss the preliminary results.