S, P., and A. BATCHA S. “SUCCESSFUL MANAGEMENT OF SACRAL POSTHERPETIC NEURALGIA WITH GANGLION IMPAR BLOCK - A CASE REPORT”. Asian Journal of Pharmaceutical and Clinical Research, vol. 12, no. 2, Feb. 2019, pp. 15-16, doi:10.22159/ajpcr.2019.v12i2.29423.