Barcia-Mejía C, González-González Y, Da Cuña-Carrera I, Alonso-Calvete A. TENS in chronic pain: a systematic review. Arch Neurocien [Internet]. 2020 Aug. 1 [cited 2024 Nov. 21];25(2):67-79. Available from: https://archivosdeneurociencias.org/index.php/ADN/article/view/239