The Spinal Appearance Questionnaire: Results of reliability, validity, and responsiveness testing in patients with idiopathic scoliosis

James O. Sanders, John J. Harrast, Timothy R. Kuklo, David W. Polly, Keith H. Bridwell, Mohammad Diab, John P. Dormans, Denis S. Drummond, John B. Emans, Charles E. Johnston, Lawrence G. Lenke, Richard E. McCarthy, Peter O. Newton, B. Stephens Richards, Daniel J. Sucato