Schäffer Castro, M., Pereira Fortes, J., Fernandes Medeiros, L., & de Souza, A. (2021). Neuromodulatory effects of Transcranial Pulsed Current Stimulation (tPCS) in Fibromyalgia: protocol for a double-blinded, sham-controlled, randomized clinical trial. Principles and Practice of Clinical Research, 7(3), 29–34. https://doi.org/10.21801/ppcrj.2021.73.4