ABSTRACT
Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via Vanvitelli, 32, 20129 Milan-Italy. IRCCS Galeazzi Orthopaedic Institute, Via R. Galeazzi, 4, 20161 Milan-Italy. aE-mail: elena.arrigoni@unimi.it bE-mail: stefania.niada@unimi.it cE-mail: anna.brini@unimi.it *Corresponding author
List of abbreviations given at the end of the text.
