Effect of interferential current therapy on pain perception and disability level in subjects with chronic low back pain: a randomized controlled trial.
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Albornoz-Cabello M, Maya-Martín J, Domínguez-Maldonado G, Espejo-Antúnez L, Heredia-Rizo AM.
Clin Rehabil. 2017 Feb; 31(2):242-249
PMID: 26975312