Laslett, Mark, et al. “Shoulder Pain Patients in Primary Care--Part 1: Clinical Outcomes over 12 Months Following Standardized Diagnostic Workup, Corticosteroid Injections, and Community-Based Care”. Journal of Rehabilitation Medicine, vol. 46, no. 9, July 2014, pp. 898-07, doi:10.2340/16501977-1860.