[1]
R. C. . Rivera Díaz, M. A. . Arcila Lotero, M. V. . Avellaneda Suarez, S. . Echeverri Saldarriaga, and M. Gómez Martínez, “Botulinum toxin for the treatment of chronic pain. Review of the evidence”, Colomb. J. Anesthesiol., vol. 42, no. 3, pp. 205–213, Jul. 2014.