Matsuda, M., Kiyoshige, Y., Takagi, M., & Hamasaki, M. (1999). Intramedullary bone-cement fixation for proximal humeral fracture in elderly patients: A report of 5 cases. Acta Orthopaedica, 70(3), 283–285. https://doi.org/10.3109/17453679908997808