作者单位:Department of Animal Biology, University of Modena and Reggio Emilia, Via Campi 213/D, 41100 Modena[1]Laboratory of Skeletal Development and Joint Disorders, University of Leuven, Herestraat 49, O and[2]Clinical Genetics Unit, Birmingham's Women's Hospital, Mindelson Way, Edgbaston, Birmingham B15 2TG[3]Department of Musculoskeletal Sciences, Division of Orthopedics, University Hospital Pellenberg[4]