Acevedo González, J. C., J. E. Becerra, J. M. Silva, M. E. Berbeo, Óscar Feo Lee, Óscar Zorro, and R. Díaz. “Continuous Stimulation of Sacral Roots in the Treatment of Urinary Pathologies and Fecal: Clinical Evaluation of a Series of 18 Patients Implanted”. Universitas Medica, vol. 54, no. 4, May 2013, pp. 419-42, doi:10.11144/Javeriana.umed54-4.ecrs.