For citations:
Kalnitsky S.A., Tselikov N.V. Analysis of patient medical exposure in X-ray diagnostics in Russia for half a century (1970–2019). Radiatsionnaya Gygiena = Radiation Hygiene. 2021;14(4):60-75. (In Russ.) https://doi.org/10.21514/1998-426X-2021-14-4-60-75