TY JOUR TI Prevention of Thromboembolic Complications in Patients with Postphlebitic Lower Extremities Syndrome KW JO Bulletin of Rehabilitation Medicine AU Knyazeva, T.. AU Nikitin, M.. AU Nikiforova, T.. PY 2021 IS 20 PB Federal State Budgetary Institution «National Medical Research Center of Rehabilitation and Balneology» of Ministry of Healthcare of Russian Federation