Kromer, Thilo O, Rob A de Bie, and Caroline HG Bastiaenen. “Effectiveness of Physiotherapy and Costs in Patients With Clinical Signs of Shoulder Impingement Syndrome: One-Year Follow-up of a Randomized Controlled Trial”. Journal of Rehabilitation Medicine 46, no. 10 (September 3, 2014): 1029–1036. Accessed May 24, 2026. https://medicaljournalssweden.se/jrm/article/view/15634.