Open Access Highly Accessed Study protocol

Effects of the carrier frequency of interferential current on pain modulation in patients with chronic nonspecific low back pain: a protocol of a randomised controlled trial

Juliana Barbosa Corrêa, Leonardo Oliveira Pena Costa, Naiane Teixeira Bastos de Oliveira, Kathleen A Sluka and Richard Eloin Liebano*

BMC Musculoskeletal Disorders 2013, 14:195  doi:10.1186/1471-2474-14-195

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