Raeissadat, Seyed Ahmad Intra-articular ozone or hyaluronic acid injection: Which one is superior in patients with knee osteoarthritis? A 6-month randomized clinical trial. [electronic resource] - Journal of pain research 2018 - 111-117 p. digital Publication Type: Journal Article ISSN: 1178-7090 Standard No.: 10.2147/JPR.S142755 doi