Fernández-la-Villa, J.; Fernández-Fernández, D.; Luque-Merino, V. J.; Nogales-Asensio, M. A.; Mancera-Ávila, C. F. Comparative Study Between Intramedullary Nailing and Conservative Treatment in Proximal Humerus Fractures of 2 and 3 Fragments . Rev. Colomb. Ortop. Traumatol. 2020, 33, 15-23.