title: Comment on Roessler et al.: Short-term follow up after implantation of a cell-free collagen type I matrix for the treatment of large cartilage defects of the knee.
authors.affiliation: Department of Orthopaedics and Rheumatology, University Hospital Marburg, Marburg, Germany. philip.roessler@ukb.uni-bonn.de.|Department of Orthopaedics and Traumatology, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany. philip.roessler@ukb.uni-bonn.de.
authors.forename: Philip P
authors.initials: PP
authors.lastname: Roessler
authors.affiliation: Department of Orthopaedics and Rheumatology, University Hospital Marburg, Marburg, Germany.
authors.forename: Turgay
authors.initials: T
authors.lastname: Efe
mesh_terms: D002356:Cartilage; D002357:Cartilage Diseases; D002358:Cartilage, Articular; D019902:Chondrocytes; D024042:Collagen Type I; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint; D014182:Transplantation, Autologous
chemical_list: D024042:Collagen Type I