Affiliation: | 1.Department of Orthopaedic Surgery, Maastricht University Medical Centre, Maastricht Postbox 616, 6200 MD, the Netherlands;2.Department of Molecular Genetics, Maastricht University Medical Centre, Maastricht, the Netherlands;3.Centre for Regenerative Medicine, Institute of Inflammation and Repair, University of Manchester, Oxford Road, Manchester M13 9PL, UK;4.Department of Orthopaedics, Central Hospital of Porto–St Anthony Hospital, Porto, Portugal |