Corrigendum to 'BMP-silk composite matrices heal critically sized femoral defects' [Bone 41 (2007) 247–255]

a Tufts Cummings School of Veterinary Medicine, North Grafton, MA, USA b Department of Biomedical Engineering, Tufts University, Medford, MA, USA c Chemical and Biological Engineering, Tufts University, Medford, MA, USA d Department of Chemistry and Applied Biosciences, ETH Zurich, Switzerland e Orthopaedic Biomechanics Laboratory, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA f Center for Molecular Orthopaedics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA g Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland h Musculoskeletal Research Unit, Faculty of Veterinary Medicine, University of Zurich, Zurich, Switzerland i Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA