@article{20993,
  author = {Machado L. and Lin C and Clare H and van Tulder MW},
  title = {The McKenzie method for (sub)acute non-specific low-back pain (protocol).},
  year = {2012},
  journal = {Cochrane Database Systematic Reviews},
  number = {3},
  pages = {CD009711},
  language = {eng},
}