TY JOUR TI Possibilities of ultrasound diagnostics of the state of the paravertebral muscles of the lumbar spine in healthy children KW AIS KW pathogenesis KW paravertebral muscles KW ultrasound diagnosis KW muscle density KW muscle cross-sectional area KW prediction of progression of spinal deformity JO Bulletin of Rehabilitation Medicine AU Rybka, D.O. AU Sharova, L.E. AU Dudin, M.G. PY 2019 IS 2019 PB Federal State Budgetary Institution «National Medical Research Center of Rehabilitation and Balneology» of Ministry of Healthcare of Russian Federation