Alvi, S. N., and M. M Hammami. “MEASUREMENT OF CORTISOL IN HUMAN PLASMA AND URINE BY ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY”. Asian Journal of Pharmaceutical and Clinical Research, vol. 11, no. 6, June 2018, pp. 199-03, doi:10.22159/ajpcr.2018.v11i6.24709.