![Ossification of the posterior longitudinal ligament in three geographically and genetically different populations of ankylosing spondylitis and other spondyloarthropathies]()
Ossification of the posterior longitudinal ligament in three geographically and genetically different populations of ankylosing spondylitis and other spondyloarthropathiesRamos-Remus, C.; Russell, A. S; Gomez-Vargas, A.; Hernandez-Chavez, A.; Maksymowych, W. P; Gamez-Nava, J. I; Gonzalez-Lopez, L.; Garcia-Hernandez, A.; Meono-Morales, E.; Burgos-Vargas, R.; Suarez-Almazor, M. E · Annals of the Rheumatic Diseases · 1998