For citations:

Sorotskaya V.N., Vaisman D.Sh., Balabanova R.M., Erdes Sh.F. TREND AND VALIDITY OF ANKYLOSING SPONDYLITIS PREVALENCE AND PATIENT MORTALITY RATES IN THE ADULT POPULATION OF THE TULA REGION VERSUS THE RUSSIAN FEDERATION. Rheumatology Science and Practice. 2015;53(4):409-413. (In Russ.) https://doi.org/10.14412/1995-4484-2015-409-413