For citations:

Smirnov A.V., Erdes Sh.F. OPTIMIZATION OF X-RAY DIAGNOSIS OF ANKYLOSING SPONDYLITIS IN CLINICAL PRACTICE: IMPORTANCE OF A PLAIN X-RAY FILM OF THE PELVIS. Rheumatology Science and Practice. 2015;53(2):175-181. (In Russ.) https://doi.org/10.14412/1995-4484-2015-175-181