@article{articled9142e4b,
title   = {Efficacy of graded activity versus supervised exercises in patients with chronic non-specific low back pain: protocol of a randomised controlled trial},
author = {Magalhaes, Mauricio Oliveira and França, Fábio Jorge Renovato and Burke, Thomaz Nogueira and Ramos, Luiz Armando Vidal and Carvalho e Silva, Ana Paula de Moura Campos and Almeida, Gabriel Peixoto Leao and Yuan, Susan Lee King and Marques, Amélia Pasqual},
year = {2013},
doi = {10.1186/1471-2474-14-36},
journal   = {BMC Musculoskeletal Disorders (Online)}
}