PT - JOURNAL ARTICLE AU - TAE-HWAN KIM AU - SEUNGHUN LEE TI - Etiology of Pseudarthrosis in Ankylosing Spondylitis: What Is the Main Cause? AID - 10.3899/jrheum.180987 DP - 2019 Mar 01 TA - The Journal of Rheumatology PG - 226--228 VI - 46 IP - 3 4099 - http://www.jrheum.org/content/46/3/226.short 4100 - http://www.jrheum.org/content/46/3/226.full SO - J Rheumatol2019 Mar 01; 46