Boonard, M., Sumanont, S., Arirachakaran, A., Apiwatanakul, P., Boonrod, A., Kanchanatawan, W., Kongtharvonskul, J. Short-term outcomes of subacromial injection of combined corticosteroid with low-volume compared to high-volume local anesthetic for rotator cuff impingement syndrome: a randomized controlled non-inferiority trial. Eur J Orthop Surg Traumatol 2018; 6: 1079-1087