Migliore, Alberto, Sandro Tormenta, Umberto Massafra, Luis Severino Martin Martin, Emilia Carloni, Cristiano Padalino, Andrea Alimonti, and Mauro Granata. 2006. “18 Month Observational Study on Efficacy of Intraarticular Hyaluronic Acid (Hylan G-F 20) Injections under Ultrasound Guidance in Hip Osteoarthritis”. Reumatismo 58 (1):39-49. https://doi.org/10.4081/reumatismo.2006.39.