Authors: Alexander S Spiro; Peggy Stenger; Michael Hoffmann; Eik Vettorazzi; Kornelia Babin; Sandra Lipovac; Jan Philipp Kolb; Alexander Novo de Oliveira; Johannes M Rueger; Ralf Stuecker Journal: Knee Surg Sports Traumatol Arthrosc Date: 2012-02-04 Impact factor: 4.342