 In addition, multiple agencies may have been involved in each case (including the FBI, local police, social services agencies and childhood protective services in many cases), with wide differences in suspicion and confirmation, often in disagreement with each other.Finkelhor, upon receiving a "confirmation", would collect information from whoever was willing or interested to provide it and did not independently investigate the cases, resulting in frequent errors in their conclusions.No data is provided beyond case studies and brief summaries.