David A Back, Stephan Pauly, Lisa Rommel, Norbert P Haas, Gerhard Schmidmaier, Britt Wildemann and Stefan H Greiner*
* Corresponding author: Stefan H Greiner stefan.greiner@charite.de
BMC Musculoskeletal Disorders 2012, 13:42 doi:10.1186/1471-2474-13-42