1. Division of Biokinesiology and Physical Therapy, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, California;
2. Department of Rehabilitation and Movement Sciences, School of Health Professions, Rutgers University, Newark, New Jersey;
3. Department of Orthotics and Prosthetics, Children’s Healthcare of Atlanta, Atlanta, Georgia; and
4. Department of Pediatrics, Kaiser Permanente Los Angeles Medical Center, Los Angeles, California