PECARN prediction rules for CT imaging of children presenting to the emergency department with blunt abdominal or minor head trauma: a multicentre prospective validation study

James F. Holmes, Kenneth Yen, Irma T. Ugalde, Paul Ishimine, Pradip P. Chaudhari, Nisa Atigapramoj, Mohamed Badawy, Kevan A McCarten-Gibbs, Donovan Nielsen, A Sage, Grant Tatro, Jeffrey S. Upperman, P. David Adelson, Daniel J. Tancredi, Nathan Kuppermann