@article{20994,
  author = {Machado L. and Lin C and Clare H and van Tulder MW and Hayden JA},
  title = {The McKenzie method for chronic non-specific low-back pain (protocol).},
  year = {2012},
  journal = {Cochrane Database Systematic Reviews},
  number = {3},
  pages = {CD009712},
  language = {eng},
}