Louwerens, J. K. G., Sierevelt, I. N., Kramer, E. T., Boonstra, R., van den Bekerom, M. P. J., van Royen, B. J., Eygendaal, D., van Noort, A. Comparing Ultrasound-Guided Needling Combined With a Subacromial Corticosteroid Injection Versus High-Energy Extracorporeal Shockwave Therapy for Calcific Tendinitis of the Rotator Cuff: A Randomized Controlled Trial. Arthroscopy 2020; 7: 1823-1833.e1