Contrast-Enhanced Ultrasound (CEUS) Identifies Perfusion Differences Between Tibial Fracture Unions and Non-Unions - Fischer, Christian; Haug, Tabea; Weber, Marc-Andre; Kauczor, Hans-Ulrich; Bruckner, Thomas; Schmidmaier, Gerhard (Ultraschall in der Medizin - European Journal of Ultrasound, 2020)