Widman, Jan, Hans Jacobsson, Stig A Larsson, and Johan Isacson. “No Effect of Drains on the Postoperative Hematoma Volume in Hip Replacement Surgery”. Acta Orthopaedica 73, no. 6 (January 1, 2002): 625–629. Accessed June 27, 2026. https://actaorthop.org/actao/article/view/19965.