Szulkowska K, Fronczek M, Szrajber B, Kujawa J. Comparative evaluation of interferential current and ultrasounds in patients with chronic low back pain in the course of osteoarthritis. Eur J Clin Exp Med [Internet]. 2010 Dec. 30 [cited 2026 May 16];8(4):419–426. Available from: https://journals.ur.edu.pl/ejcem/article/view/12987