The Pathways Clearinghouse identifies and reviews relevant studies, including impact, descriptive, and implementation studies, to collect details on how an intervention was implemented. We summarize information such as the amount of services received, the number of staff delivering services, and costs and benefits. For each intervention summary, we identify a key informant, who is usually the lead author on one or more of the studies. We share the draft implementation summary with the key informant to ensure accuracy and clarity. During their review, the key informant might provide additional information or suggest edits. Therefore, although the majority of information comes from the studies cited on the study pages associated with each intervention, some of the details come directly from exchanges with a key informant.