For citations:

Menzulin R.S., Ivanov A.D., Kuznetsov D.V. The impact of orthopedic mattresses on the severity of pain and sleep quality in patients with chronic nonspecific low back pain: a randomized controlled trial. Clinical Medicine (Russian Journal). 2024;102(8):634-640. (In Russ.) https://doi.org/10.30629/0023-2149-2024-102-8-634-640