Risch, Lucie, Monique Wochatz, Janin Messerschmidt, Tilman Engel, Frank Mayer, & Michael Cassel. " Reliability of evaluating Achilles tendon blood flow assessed with Doppler Ultrasound Advanced Dynamic Flow." Medical Research Archives [Online], 3.5 (2016): n. pag. Web. 5 May. 2024