Wang, Runsheng Reply. [electronic resource] - Arthritis & rheumatology (Hoboken, N.J.) 03 2017 - 677-678 p. digital Publication Type: Letter; Comment ISSN: 2326-5205 Standard No.: 10.1002/art.40006 doi Subjects--Topical Terms: Disease ProgressionHumansSpondylarthritisSpondylitis, Ankylosing