Arcila Lotero, Mario Andrés, Roberto Cario Riuera Díaz, Daniel Campuzano Escobar, María Adelaida Mejía Aguilar, and Sandra Milena Martínez Ramírez. 2013. “Efficacy and Safety of Ultrasound-Guided Suprascapular Nerve Block in Patients With Chronic Shoulder Pain”. Colombian Journal of Anesthesiology 41 (2):104-8. https://www.revcolanest.com.co/index.php/rca/article/view/797.