1 The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio2Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio3Department of Orthopaedics, University of Pennsylvania, Philadelphia4The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts5Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, Ohio.
2 The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio6College of Medicine, University of Cincinnati, Cincinnati, Ohio.
3 Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio6College of Medicine, University of Cincinnati, Cincinnati, Ohio7Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.