Low-intensity pulsed ultrasound accelerates healing in rat calcaneus tendon injuries - Jeremias Júnior, Sérgio Luiz; Camanho, Gilberto Luis; Bassit, Ana Cristina Ferreira; Forgas, Andrea; Ingham, Sheila J. M; Abdalla, Rene Jorge (The Journal of orthopaedic and sports physical therapy, 2011)