The short-term effects of graded activity versus physiotherapy in patients with chronic low back pain: A randomized controlled trial - Magalhães, Mauricio Oliveira; Muzi, Luzilauri Harumi; Comachio, Josielli; Burke, Thomaz Nogueira; França, Fabio Jorge Renovato; Ramos, Luiz Armando Vidal; Almeida, Gabriel Peixoto Leão; Carvalho-e-Silva, Ana Paula de Moura Campos; Marques, Amélia Pasqual (Manual Therapy, 2015)