Saccomanno, M. F., Donati, F., Careri, S., Bartoli, M., Severini, G., Milano, G. Efficacy of intra-articular hyaluronic acid injections and exercise-based rehabilitation programme, administered as isolated or integrated therapeutic regimens for the treatment of knee osteoarthritis. Knee Surgery, Sports Traumatology, Arthroscopy 2016; 5: 1686-94