@article{17723,
  author = {Macedo L. and Herbert Rob and McAuley J. and Kamper S. and Maher C.},
  title = {Analgesic effects of treatments for non-specific low back pain: a meta-analysis of placebo-controlled randomized trials},
  year = {2009},
  journal = {Rheumatology},
  volume = {48},
  number = {5},
  pages = {520-7.},
  language = {eng},
}