Long-term outcomes of a large, prospective observational cohort of older adults with back pain

Jeffrey G. Jarvik, Laura S. Gold, Katherine Tan, Janna L. Friedly, Srdjan S. Nedeljkovic, Bryan A. Comstock, Richard A. Deyo, Judith A. Turner, Brian W. Bresnahan, Sean D. Rundell, Kathryn T. James, David R. Nerenz, Andrew L. Avins, Zoya Bauer, Larry Kessler, Patrick J. Heagerty