Sources
WebMD Health Tool
Reviewed by Michael W. Smith, MD on October 04, 2019
Joint, Bone, Spine: Revue du Rhumatisme: "Pathophysiology of ankylosing spondylitis: what's new?"
Arthritis Foundation: "What is Ankylosing Spondylitis?"
Hospital for Special Surgery: "Ankylosing Spondylitis: An Overview."