Supplemental_Material – Supplemental material for Effect of adding interferential current stimulation to exercise on outcomes in primary care patients with chronic neck pain: a randomized controlled trial

Supplemental material, Supplemental_Material for Effect of adding interferential current stimulation to exercise on outcomes in primary care patients with chronic neck pain: a randomized controlled trial by Manuel Albornoz-Cabello, José Manuel Pérez-Mármol, Cristo Jesus Barrios Quinta, Guillermo A Matarán-Peñarrocha, Adelaida María Castro-Sánchez and Blanca de la Cruz Olivares in Clinical Rehabilitation