1. Van der Linden SM, Valkenburg HA, Cats A. Evaluation of diagnostic criteria for ankylosing spondylitis. A statistical evaluation.Ann Rheum Dis 1984; 27: 361–368.
2. Forrester DM, Hollingsworth PN, Dawkins RL. Difficulties in the radiographic diagnosis of sacroilitis.Clin Rheum Dis 1983; 9: 323–332.
3. Russell AS, Lentle BC, Percy JS. Investigation of sacroiliac disease: comparative evaluation of radiological and radionuclide techniques.J Rheumatol 1975; 2: 45–51.
4. Lin WY, Wang SJ. Influence of age and gender on quantitative sacroiliac joint scintigraphy.J. Nucl Med 1998; 39: 1269–1272.
5. Shichikawa K, Tsujimoto M, Nishioka J, Nishibayashi Y, Matsumoto K. Histopathology of early sacroiliitis and enthesis in ankylosing spondylitis. InAdvances in Inflammation Research, Vol. 9. The Spondyloarthropathies. Ziff M, Cohen SB (eds), New York: Raven Press, 1985