Hyaluronan-based scaffolds (Hyalograft C) in the treatment of knee cartilage defects: preliminary clinical findings. - Pavesio,A.; Abatangelo,G.; Borrione,A.; Brocchetta,D.; Hollander,A.P.; Kon,E.; Torasso,F.; Zanasi,S.; Marcacci,M. (Novartis Found Symp, 2003)