Injection of tennis elbow: hit and miss? A cadaveric study of injection accuracy - Keijsers, R; van den Bekerom, M PJ; Koenraadt, K LM; Bleys, R LAW; van Dijk, C N; Eygendaal, D; Elbow Study Collaborative (Knee Surg Sports Traumatol Arthrosc, 2017)