Prospective randomized trial comparing efficacy and safety of intravenous and intra-articular tranexamic acid in total knee arthroplasty oleh Moses Man-Lung Li, Jojo Yan-Yan Kwok, Kwong-Yin Chung, Kin-Wing Cheung, Kwok-Hing Chiu, Wai-Wang Chau, Kevin Ki-Wai Ho