For citations:
Litvinov II, Lokhovinin IV, Savgachev VV. Caudal epidural blockades for chronic pain in the lower back in working age. Meditsinskiy sovet = Medical Council. 2021;(21-2):143-151. (In Russ.) https://doi.org/10.21518/2079-701X-2021-21-2-143-151