TY JOUR TI The Professional Retraining Program in Radiotherapy for Medical Physicists KW medical physics KW nuclear medicine KW radiotherapy KW retraining of specialists KW the system of assessment of medical physicists JO Medical Radiology and radiation safety AU Chernyaev, A.P. AU Borschegovskaya, P.Y. AU Varzar', S.M. AU Zheltonozhskaya, M.V. AU Lykova, E.N. AU Nisimov, S.U. AU Rozanov, V.. PY 2018 IS 63 PB Federal Medical Biological Agency of Russia