Yuan  H, Fan  Y, Mou  X, Qing  Y, Yan  X, Tang  X, Yue  W, Gu  P, Yang  Q, He  Y. Musculoskeletal Ultrasound in Monitoring the Efficacy of Gout: A Prospective Study Based on Tophus and Double Contour Sign. Balkan Med J 2023;40:104-110