Manipulation under anaesthesia versus lysis of adhesions for arthrofibrosis of the knee: a 6-month randomized, multicentre, non-inferiority comparative effectiveness protocol - Zhang, Ling; Yan, Mengning; Chen, Shiyi; Hua, Yinghui; Wang, Zimin; Xu, Lili; Fan, Shuai; Lin, Lu; Cai, Bin (Annals of Palliative Medicine, 2021)