Authors: Markus Melloh; Christoph Röder; Achim Elfering; Jean-Claude Theis; Urs Müller; Lukas P Staub; Emin Aghayev; Thomas Zweig; Thomas Barz; Thomas Kohlmann; Simon Wieser; Peter Jüni; Marcel Zwahlen Journal: BMC Musculoskelet Disord Date: 2008-06-06 Impact factor: 2.362