@inproceedings{HoffmannSiegfried2006,
  author    = {Gerd Hoffmann and Ingeborg Siegfried},
  title     = {Volkskrankheit R{\"u}ckenschmerz : neue Sichtweisen},
  booktitle = {GMS german medical science},
  volume    = {3},
  number    = {Doc 04ruecken1},
  pages     = {1 -- 28},
  url       = {http://www.egms.de/en/meetings/ruecken2004/04ruecken1.shtml},
  year      = {2006},
}