Authors: Marc Beirer; Michael Zyskowski; Moritz Crönlein; Dominik Pförringer; Marcus Schmitt-Sody; Gunther Sandmann; Stefan Huber-Wagner; Peter Biberthaler; Chlodwig Kirchhoff Journal: Knee Surg Sports Traumatol Arthrosc Date: 2015-11-21 Impact factor: 4.342