1 Director of Emergency Radiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. Electronic address: kaplans2@email.chop.edu.
2 Section Head of Clinical Medical Physics in the Department of Radiology at Cincinnati Children's Hospital Medical Center (since retired); University of Cincinnati School of Medicine, Cincinnati, Ohio.
3 Senior Medical Physicist, Environmental Health & Radiation Safety, University of Pennsylvania, Philadelphia, Pennsylvania.
4 Associate Director of Diagnostic Physics & Radiation Safety, Environmental Health & Radiation Safety, University of Pennsylvania, Philadelphia, Pennsylvania.
5 Director of Radiology Informatics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
6 Department of Biostatistics, Epidemiology, & Informatics, University of Pennsylvania, and the Department of Pediatrics, Children's Hospital of Philadelphia, Division of Biostatistics, Philadelphia, Pennsylvania.
7 Director of Radiology Physics and Engineering, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.