Value of Contrast-enhanced Ultrasound in Evaluating Synovitis and Predicting Recurrent Joint Bleeding of Hemophilia - Ma, Fei; Zhang, Ya-ru; Luke, Koon Hung; Liu, Hao; Luo, Wan-xian; Zhang, Li; Xiao, Li-ling; Yi, Mei; Gao, Yang; Wang, Wei-zhen; Qiu, Shi-qiu; Feng, Xiao-qin; et al. (Current Medical Science, 2022)