Nathani A, Gold GE, Monu U, Hargreaves B, Finlay AK, Rubin EB, Safran MR. Does Injection of Hyaluronic Acid Protect Against Early Cartilage Injury Seen After Marathon Running? A Randomized Controlled Trial Utilizing High-Field Magnetic Resonance Imaging. Am J Sports Med. 2019 12; 47(14):3414-3422.