![Trajectories of Symptoms and Function in Older Adults With Low Back Disorders]()
Trajectories of Symptoms and Function in Older Adults With Low Back DisordersDeyo, Richard A.; Bryan, Matthew; Comstock, Bryan A.; Turner, Judith A.; Heagerty, Patrick; Friedly, Janna; Avins, Andrew L.; Nedeljkovic, Srdjan S.; Nerenz, David R.; Jarvik, Jeffrey G. · Spine · 2015