TY JOUR TI Muscle Mass Index at the Level Th12 vertebra as a Prognostic Factor for Fatal Outcome in the Patients with Pneumonia Caused by SARS-COV2 KW computed tomography KW sarcopenia KW muscle mass index KW COVID19 KW SARS-Cov2 KW prognostic factors JO Medical Radiology and radiation safety AU Bashkov, A.N. AU Sushko, A.I. AU Grigor'eva, O.O. AU Sheyh, Z.V. AU Udalov, Y.D. AU Shikunov, D.A. PY 2021 IS 66 PB Federal Medical Biological Agency of Russia