Ultrasound-Guided Collagen Peptides Injections Combined with Focused Extracorporeal Shockwave Therapy and Therapeutic Exercise in Chronic Partial Common Extensor Tendon Tears at Elbow Lateral Epicondyle: A Retrospective Case Series - Nicolò Vitale; Luca Latini; Marco Di Gesù; Ilias Vurliotis; Marianna Capecci; Valerio Sebastiano Amico; Florentin Ananu Vreju; Emilio Filippucci (Life, 2026)