Effects of electroacupuncture frequencies on chronic low back pain in older adults: triple-blind, 12-months protocol for a randomized controlled trial - Torres, Sarina Francescato; Macedo, Ana Carolina Brandt de; Antunes, Mateus Dias; Souza, Ingred Merllin Batista de; Santos, Francisco Dimitre Rodrigo Pereira; Santo, Adriana de Sousa Espirito; Jacob, Flavia Ribeiro; Cruz, Ariela Torres; Januario, Priscila de Oliveira; Marques, Amelia Pasqual (Trials, 2019)