Journal of Pediatric Orthopaedics :Management of Closed Femoral Shaft Fractures in Children,

"In this study, the authors mined KID, the Kids' Inpatient Database, for the years 1997 and 2000. This database is sponsored by the federal Department of Health and Human Services through the Agency for Research and Quality, and contains information on pediatric inpatient care in community hospitals in about half of the states in the US. There are 1.9 million discharge records for 1997 and 2.5 million for 2000."