Additional effect of static ultrasound and diadynamic currents on myofascial trigger points in a manual therapy program for patients with chronic neck pain: a randomized clinical trial - Dibai-Filho, Almir Vieira; Oliveira, Alessandra Kelly de; Girasol, Carlos Eduardo; Dias, Fabiana Rodrigues Cancio; Guirro, Rinaldo Roberto de Jesus (American Journal of Physical Medicine & Rehabilitation, 2017)