T., M., A., V. and R., L. 2018. A comparative study of intravenous dexmedetomidine and midazolam on prolongation of spinal anesthesia. International Journal of Research in Medical Sciences. 6, 4 (Mar. 2018), 1297–1303. DOI:https://doi.org/10.18203/2320-6012.ijrms20181286.